Long Term Obligations - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Nov. 13, 2014	Mar. 13, 2015
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, 2014, 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 inventories permitted to borrow under the line of credit	55.00%
Borrowing base of the company	17,000,000	13,800,000
Credit facility maturity date	Jul. 10, 2017
19th Amendment
Schedule of Capitalization, Long-term Debt [Line Items]
Percentage of eligible accounts receivable permitted to borrow under the line of credit			85.00%
19th Amendment | Minimum
Schedule of Capitalization, Long-term Debt [Line Items]
Percentage of eligible inventories permitted to borrow under the line of credit			50.00%
19th Amendment | Maximum
Schedule of Capitalization, Long-term Debt [Line Items]
Percentage of eligible inventories permitted to borrow under the line of credit			55.00%
19th Amendment | During the months of February and July 2015
Schedule of Capitalization, Long-term Debt [Line Items]
Line of credit borrowing capacity			27,000,000
19th Amendment | During the months of March, April and May 2015
Schedule of Capitalization, Long-term Debt [Line Items]
Line of credit borrowing capacity			30,000,000
19th Amendment | During the month of June 2015
Schedule of Capitalization, Long-term Debt [Line Items]
Line of credit borrowing capacity			29,000,000
19th Amendment | For the months of January, August, September, October, November and December 2015
Schedule of Capitalization, Long-term Debt [Line Items]
Line of credit borrowing capacity			25,000,000
Subsequent Event
Schedule of Capitalization, Long-term Debt [Line Items]
Outstanding borrowings under revolving credit facility				$ 18,390,000
Prime Rate
Schedule of Capitalization, Long-term Debt [Line Items]
Interest rate payable	3.25%
Additional rate of interest	1.75%
LIBOR Rate
Schedule of Capitalization, Long-term Debt [Line Items]
Interest rate payable	0.25%
Additional rate of interest	3.25%