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Long Term Obligations - Additional Information (Detail) (USD $)
12 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Mar. 06, 2014
Subsequent Event
Dec. 31, 2013
Prime Rate
Dec. 31, 2013
Libor Rate
Schedule of Capitalization, Long-term Debt [Line Items]          
Debt instrument description The secured notes payable to bank evidence borrowings under a revolving credit facility which permits us to borrow up to the lesser of (i) $25,000,000, or (ii) an amount equal to 85% of the value of our eligible accounts receivable and up to 55% of the value of our eligible inventory.        
Debt instrument covenant compliance As of December 31, 2013, we were in compliance with all of our financial and other covenants under our line of credit agreement.        
Line of credit borrowing capacity $ 25,000,000        
Percentage of eligible accounts receivable permitted to borrow under the line of credit 85.00%        
Percentage of eligible inventory permitted to borrow under the line of credit 55.00%        
Borrowing base of the company 13,800,000 16,800,000      
Interest rate payable       3.25% 0.165%
Additional rate of interest       1.75% 3.25%
Credit facility maturity date Jul. 10, 2017        
Outstanding borrowings under revolving credit facility     $ 14,905,000