Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Detail)

v2.4.0.8
Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)
In Thousands, except Share data, unless otherwise specified
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Summary Of Significant Accounting Policies [Line Items]      
Foreign bank balance $ 6,701 $ 2,201  
Maturity period 90 days    
Allowance for doubtful accounts 703 1,105  
Inventory reserve 11,321 6,944  
Period for classifying as non moving inventory 24 months    
Capitalized computer software additions 2,298 5,685 161
Estimated useful lives of assets Generally two to 27 years or over the terms of the related leases, whichever is shorter    
Impairment charges 0 0 0
Long-lived assets impairment charges 0 0 0
Risk cover by third party, maximum 40,000    
Risk cover by third party, minimum 250    
Loss limit covered under self-insurance 200    
Percentage of coverage under health insurance plan 125.00%    
Matching contribution for eligible employees, percentage 6.00%    
Maximum matching contribution for eligible employees 50.00%    
Maximum employee contribution percentage 8.00%    
Percentage of employer required contribution 100.00%    
Defined contribution plan costs 1,843 1,426 1,327
Shipping and handling costs 26,095 23,067 21,695
Research and development costs 1,366 1,222 1,187
Deferred Profit Sharing Plan [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Minimum required contribution 0    
Put Options [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Fair value of temporary equity held by management 16,975 14,116  
Common stock, shares outstanding 161 198  
Minimum [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives of assets 2 years    
Minimum [Member] | RRSP [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Matching contribution for eligible employees, percentage 1.00%    
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    
Maximum [Member] | RRSP [Member]
     
Summary Of Significant Accounting Policies [Line Items]      
Matching contribution for eligible employees, percentage 5.00%