Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
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6 Months Ended | 12 Months Ended | |||
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Dec. 31, 2014
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Jun. 29, 2014
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Summary Of Significant Accounting Policies [Line Items] | |||||
Foreign bank balance | $ 4,597,000hlm_CashAndCashEquivalentsHeldInForeignBankAccounts | $ 4,597,000hlm_CashAndCashEquivalentsHeldInForeignBankAccounts | $ 6,701,000hlm_CashAndCashEquivalentsHeldInForeignBankAccounts | ||
Maturity period | 90 days | ||||
Allowance for doubtful accounts | 627,000us-gaap_AllowanceForDoubtfulAccountsReceivable | 627,000us-gaap_AllowanceForDoubtfulAccountsReceivable | 703,000us-gaap_AllowanceForDoubtfulAccountsReceivable | ||
Period for classifying as non moving inventory | 24 months | ||||
Capitalized computer software additions | 2,298,000us-gaap_CapitalizedComputerSoftwareAdditions | 5,685,000us-gaap_CapitalizedComputerSoftwareAdditions | |||
Estimated useful lives of assets | Generally two to 27 years or over the terms of the related leases, whichever is shorter. | ||||
Impairment charges | 0us-gaap_GoodwillImpairmentLoss | 0us-gaap_GoodwillImpairmentLoss | 0us-gaap_GoodwillImpairmentLoss | ||
Long-lived assets impairment charges | 0us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf | 0us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf | 0us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf | 0us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf | |
Risk cover by third party, maximum | 40,000,000hlm_MaximumAmountOfRiskCoveredFromThirdPartyInsurers | 40,000,000hlm_MaximumAmountOfRiskCoveredFromThirdPartyInsurers | |||
Risk cover by third party, minimum | 250,000hlm_MinimumAmountOfRiskCoveredFromThirdPartyInsurers | 250,000hlm_MinimumAmountOfRiskCoveredFromThirdPartyInsurers | |||
Loss limit covered under self-insurance | 200,000hlm_SelfInsuranceStopLossLimitPerParticipant | ||||
Percentage of coverage under health insurance plan | 125.00%hlm_MinimumPercentageOfExpectedClaimsForCoverageUnderGroupHealthInsurance | ||||
Matching contribution for eligible employees, percentage | 6.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent | ||||
Maximum matching contribution for eligible employees | 50.00%hlm_MaximumPercentageOfMatchingContributionsMadeByEmployer | ||||
Maximum employee contribution percentage | 8.00%hlm_MaximumEmployeeContributionToDefinedContributionsPlan | ||||
Percentage of employer required contribution | 100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch | ||||
Defined contribution plan costs | 1,843,000us-gaap_DefinedContributionPlanCostRecognized | 1,426,000us-gaap_DefinedContributionPlanCostRecognized | |||
Shipping and handling costs | 26,095,000us-gaap_ShippingHandlingAndTransportationCosts | 23,067,000us-gaap_ShippingHandlingAndTransportationCosts | |||
Research and development costs | 1,366,000us-gaap_ResearchAndDevelopmentExpense | 1,222,000us-gaap_ResearchAndDevelopmentExpense | |||
Common stock, shares outstanding | 51.9us-gaap_TemporaryEquitySharesOutstanding | ||||
Deferred Profit Sharing Plan [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Minimum required contribution |
0hlm_MinimumRequiredContribution / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = hlm_DeferredProfitSharingPlanMember |
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Put Options [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Fair value of temporary equity held by management |
16,975,000us-gaap_TemporaryEquityValueExcludingAdditionalPaidInCapital / us-gaap_OptionIndexedToIssuersEquityTypeAxis = us-gaap_PutOptionMember |
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Common stock, shares outstanding |
161.2us-gaap_TemporaryEquitySharesOutstanding / us-gaap_OptionIndexedToIssuersEquityTypeAxis = us-gaap_PutOptionMember |
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Successor [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Capitalized computer software additions |
5,097,000us-gaap_CapitalizedComputerSoftwareAdditions / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
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Defined contribution plan costs |
983,000us-gaap_DefinedContributionPlanCostRecognized / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
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Shipping and handling costs |
15,989,000us-gaap_ShippingHandlingAndTransportationCosts / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
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Research and development costs |
598,000us-gaap_ResearchAndDevelopmentExpense / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
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Successor [Member] | Put Options [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Common stock, shares outstanding |
0.0us-gaap_TemporaryEquitySharesOutstanding / us-gaap_OptionIndexedToIssuersEquityTypeAxis = us-gaap_PutOptionMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
0.0us-gaap_TemporaryEquitySharesOutstanding / us-gaap_OptionIndexedToIssuersEquityTypeAxis = us-gaap_PutOptionMember / us-gaap_StatementScenarioAxis = us-gaap_SuccessorMember |
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Predecessor [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Capitalized computer software additions |
704,000us-gaap_CapitalizedComputerSoftwareAdditions / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |
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Defined contribution plan costs |
1,003,000us-gaap_DefinedContributionPlanCostRecognized / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |
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Shipping and handling costs |
14,890,000us-gaap_ShippingHandlingAndTransportationCosts / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |
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Research and development costs |
1,094,000us-gaap_ResearchAndDevelopmentExpense / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |
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Predecessor [Member] | Put Options [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Fair value of temporary equity held by management |
16,975,000us-gaap_TemporaryEquityValueExcludingAdditionalPaidInCapital / us-gaap_OptionIndexedToIssuersEquityTypeAxis = us-gaap_PutOptionMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |
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Common stock, shares outstanding |
161.2us-gaap_TemporaryEquitySharesOutstanding / us-gaap_OptionIndexedToIssuersEquityTypeAxis = us-gaap_PutOptionMember / us-gaap_StatementScenarioAxis = us-gaap_PredecessorMember |
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Minimum [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Estimated useful lives of assets | 2 years | ||||
Percentage of fair value over carrying value |
10.00%hlm_PercentageOfFairValueOverCarryingValue / us-gaap_RangeAxis = us-gaap_MinimumMember |
10.00%hlm_PercentageOfFairValueOverCarryingValue / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Minimum [Member] | RRSP [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Matching contribution for eligible employees, percentage |
1.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = hlm_RegisteredRetirementSavingsPlanMember / us-gaap_RangeAxis = us-gaap_MinimumMember |
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Employee service period | 2 years | ||||
Maximum [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Estimated useful lives of assets | 27 years | ||||
Compensation and general liability losses |
$ 250,000hlm_RiskInsuranceReserveForProductLiabilityAutomotiveWorkersCompensationAndGeneralLiability / us-gaap_RangeAxis = us-gaap_MaximumMember |
$ 250,000hlm_RiskInsuranceReserveForProductLiabilityAutomotiveWorkersCompensationAndGeneralLiability / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Maximum [Member] | RRSP [Member] | |||||
Summary Of Significant Accounting Policies [Line Items] | |||||
Matching contribution for eligible employees, percentage |
5.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent / us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis = hlm_RegisteredRetirementSavingsPlanMember / us-gaap_RangeAxis = us-gaap_MaximumMember |
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Cash And Cash Equivalents Held In Foreign Bank Accounts No definition available.
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Employees Service Period No definition available.
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Maximum Amount Of Risk Covered From Third Party Insurers No definition available.
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Maximum Employee Contribution To Defined Contributions Plan No definition available.
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Maximum Percentage Of Matching Contributions Made By Employer No definition available.
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Maximum Period For Classifying As Cash And Cash Equivalents No definition available.
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Minimum Amount Of Risk Covered From Third Party Insurers No definition available.
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Minimum Percentage Of Expected Claims For Coverage Under Group Health Insurance No definition available.
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Minimum Required Contribution No definition available.
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Percentage of fair value over carrying value. No definition available.
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Period For Classifying As Non Moving Inventory No definition available.
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Risk Insurance Reserve For Product Liability, Automotive, Workers Compensation And General Liability No definition available.
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Self Insurance Stop Loss Limit Per Participant No definition available.
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For an unclassified balance sheet, a valuation allowance for receivables due a company that are expected to be uncollectible. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Additions made to capitalized computer software costs during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The amount of the cost recognized during the period for defined contribution plans. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Percentage of employees' gross pay for which the employer contributes a matching contribution to a defined contribution plan. No definition available.
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Percentage employer matches of the employee's percentage contribution matched. No definition available.
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Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Describes the periods of time over which an entity anticipates to receive utility from its property, plant and equipment (that is, the periods of time over which an entity allocates the initial cost of its property, plant and equipment). Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment. No definition available.
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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Cost incurred during the reporting period in transporting goods and services to customers. Includes freight-out costs. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Carrying amount of the par value of temporary equity outstanding. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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