Credit Facility - Additional Information (Detail) (USD $)	3 Months Ended	6 Months Ended
	Jun. 30, 2013	Jun. 30, 2013
Debt Disclosure [Abstract]
Term agreement of senior secured credit facility		3 years
Amount of senior secured credit facility	$ 25,000,000	$ 25,000,000
Percentage of eligible account receivable		80.00%
Percentage of domestically held raw material and finished goods inventory		35.00%
Percentage of advances against inventory		40.00%
Amount of aggregate outstanding on the revolving line of credit		10,000,000
Option to borrow at an interest rate of LIBOR plus		2.75%
Option to borrow at an interest rate of Wall Street Journal prime rate plus		0.50%
Liquidity rate	20,000,000
Borrowing interest rate options	2.25%
Percentage of unused revolving line facility fee	0.375%
Adjusted quick ratio	1.40
Percentage of maintain operating and other deposit accounts	25.00%
Interest expense charged on the unused portion of the facility	$ 24,000	$ 47,000