Subsequent Events - Additional Information (Detail) (Partners for Growth III, L.P., Subsequent Event, USD $)	1 Months Ended
	Feb. 08, 2013
Subsequent Event [Line Items]
Aggregate principal amount	$ 2,500,000
Payment of loan period	42 months
Debt instrument, interest rate	11.75%
Liquidity ratio	2.25
Line of credit	1,500,000
Issuance of common stock for warrants	1,195,000
Consecutive trading days prior to the date of exercise	45 days
Maximum
Subsequent Event [Line Items]
Maximum aggregate amount that warrant holder has the right to exchange	250,000
Period One
Subsequent Event [Line Items]
Adjusted EBITDA	(750,000)
Period Two
Subsequent Event [Line Items]
Adjusted EBITDA	(300,000)
Period Three
Subsequent Event [Line Items]
Adjusted EBITDA	1
Period Four
Subsequent Event [Line Items]
Adjusted EBITDA	100,000
Period Five
Subsequent Event [Line Items]
Adjusted EBITDA	412,000
Loan agreement, revenue requirement	32,600,000
Exercise Price 1
Subsequent Event [Line Items]
Issuance of common stock for warrants	995,000
Warrants strike price	$ 0.50
Number of trading days for conversion	10 days
Warrant canceled	100,000
Exercise Price 2
Subsequent Event [Line Items]
Issuance of common stock for warrants	200,000
Warrants strike price	$ 1.00
Warrant canceled	100,000
Before Amendment
Subsequent Event [Line Items]
Liquidity ratio	2.00
After Amendment
Subsequent Event [Line Items]
Liquidity ratio	2.25
Streamline Reporting
Subsequent Event [Line Items]
Cash and line of credit facility , available amount	3,000,000
Streamline Reporting | Minimum
Subsequent Event [Line Items]
Liquidity ratio	2.50
Adjusted EBITDA	$ 1
Adjustments
Subsequent Event [Line Items]
Debt instrument, interest rate	9.75%
Debt instrument, interest rate reduction	2.00%