Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies - Additional Information (Detail)

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Commitments and Contingencies - Additional Information (Detail) (USD $)
In Thousands, unless otherwise specified
 0 Months Ended 12 Months Ended 12 Months Ended
Mar. 20, 2012
Dec. 31, 2012
Patents
Dec. 31, 2013
Dec. 31, 2013
Maximum [Member]
Dec. 31, 2013
Minimum [Member]
Loss Contingencies [Line Items]          
Losses up to per occurrence related to product liability, automotive, workers' compensation and general liability     $ 250    
Occurrences in excess for purchased catastrophic coverage       40,000 250
Liability recorded for such risk insurance reserves     1,832    
Aggregate vendors and insurers letters of credit related to product purchases and insurance coverage of product liability, workers' compensation and general liability     3,879    
Group health claims up to annual stop loss limit per participant     200    
Annual group health insurance claims in excess of expected claims     125.00%    
Liability recorded for such group health insurance reserves     2,200    
Company agreed to pay Steelworks Hardware LLC in full settlement of all alleged claims and plaintiff legal fees $ 1,635        
Number of patents under which license granted   2