Long-term Debt and Obligations - Additional Information (Detail) (USD $)	9 Months Ended		9 Months Ended			1 Months Ended
	Sep. 30, 2013 Installment	Dec. 31, 2012	Sep. 30, 2013 Office building lease [Member]	Sep. 30, 2013 Equipment [Member]	Sep. 30, 2013 Prime Rate [Member]	Apr. 30, 2013 Term loan [Member]	Mar. 31, 2012 Term loan [Member]	Sep. 30, 2013 Accounts receivable [Member]
Proforma Debt Instrument [Line Items]
Borrowed term loan						$ 18,000,000	$ 13,000,000
Credit facility						5,000,000		2,000,000
Interest rate on log term loan	8.89%
Number of installments	30
Percentage of principal at the end of term payment	5.50%
Principal at the end of term payment	990,000
Principal due date	Jul. 01, 2016
Term loan borrowings date of required payments	Jan. 01, 2014
Accrued interest premium payment	3.00%
Interest rate					3.70%
Floor rate					6.95%
Percentage of fee payment on unused portion of revolver borrowings	0.075%
Term of lease			5 years	3 years
Lease expiration date				2016-07
Amount financed under lease	$ 410,000	$ 25,000	$ 843,000	$ 410,000
Interest rate accrues on the unpaid balance			10.00%