Debt (Details) - USD ($)					3 Months Ended
	Mar. 28, 2016	Feb. 25, 2016	Feb. 16, 2016	Apr. 17, 2015	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Loan and Security Agreements [Line Items]
Common stock, par value (in dollars per share)	$ 0.04				$ 0.04		$ 0.04
Number of shares to be purchased under warrant (in shares)					8,152,174
Fair value adjustment of warrants					$ 59,000
Stock issued (in shares)	10,000,000
Fair value
Loan and Security Agreements [Line Items]
Derivative liability					887,000
Line of credit | 2013 Loan and Security Agreement
Loan and Security Agreements [Line Items]
Maximum borrowing capacity					$ 7,000,000
Loan maximum defined, based on eligible receivables (as percent)					85.00%
Borrowings outstanding					$ 2,600,000
Available borrowing availability					$ 300,000
Interest rate, stated percentage (as percent)					6.00%
Effective interest rate (as percent)					6.00%
Commitment fee as percent of revolving credit limit					1.00%
Commitment fee					$ 30,000	$ 50,000
Debt covenant, minimum EBITDA amount for the three month period ending March 31, 2016	$ 1,600,000
Debt covenant, minimum EBITDA amount for the six month period ending June 30, 2016	2,000,000
Debt covenant, minimum EBITDA amount for the nine month period ending September 30, 2016	1,100,000
Debt covenant, minimum EBITDA amount for the twelve month period ending December 31, 2016	800,000
Debt covenant, additional equity required (not less than)	4,000,000.0
Line of credit | 2013 Loan and Security Agreement | Other Assets
Loan and Security Agreements [Line Items]
Deferred issuance costs, net					$ 300,000
Line of credit | 2013 Loan and Security Agreement | Prime rate
Loan and Security Agreements [Line Items]
Spread on variable rate (as percent)					2.75%
Line of credit | 2013 Loan and Security Agreement | LIBOR 90 day rate
Loan and Security Agreements [Line Items]
Spread on variable rate (as percent)					5.25%
Loans payable
Loan and Security Agreements [Line Items]
Amount of term loan					$ 5,000,000
Loans payable | Credit agreement
Loan and Security Agreements [Line Items]
Deferred issuance costs, net					$ 139,000		$ 163,000
Debt covenant, minimum EBITDA amount for the three month period ending March 31, 2016	1,600,000
Debt covenant, minimum EBITDA amount for the six month period ending June 30, 2016	2,000,000
Debt covenant, minimum EBITDA amount for the nine month period ending September 30, 2016	1,100,000
Debt covenant, minimum EBITDA amount for the twelve month period ending December 31, 2016	800,000
Debt covenant, additional equity required (not less than)	500,000.0
Amount of term loan				$ 5,000,000
Origination fee				100,000
Maximum aggregate revenue-based payment				$ 600,000
First principal payment			$ 500,000
Interest expense			200,000
Total periodic payment amount			$ 700,000
Variable rate floor, percent				1.00%
Exit fee as a percent of aggregate principal				8.00%	8.00%
Debt covenant, minimum aggregate revenue for twelve month period ending March 31, 2016	33,000,000.0
Debt covenant, minimum aggregate revenue for twelve month period ending June 30, 2016	34,000,000
Debt covenant, minimum aggregate revenue for twelve month period ending September 30, 2016	37,000,000
Debt covenant, minimum aggregate revenue for twelve month period ending December 31, 2016	40,000,000
Debt covenant, minimum aggregate revenue for twelve month period ending each fiscal quarter thereafter	45,000,000
Debt covenant, minimum EBITDA amount for the twelve month period ending March 31, 2017	500,000
Debt covenant, minimum EBITDA amount for the twelve month period ending June 30, 2017	900,000
Debt covenant, minimum EBITDA amount for the twelve month period ending September 30, 2017	$ 2,500,000
Common stock, par value (in dollars per share)	$ 0.04	$ 0.04
Stock issued	$ 100,000	$ 50,000
Debt covenant, maximum debt outstanding				$ 250,000.00
Number of shares to be purchased under warrant (in shares)				8,152,174
Exercise price of warrant (in dollars per share)				$ 0.46
Debt discount				$ 2,700,000	$ 2,374,000		$ 2,785,000
Expected volatility rate (as percent)				85.00%
Risk free interest rate (as percent)				1.40%
Dividend rate (as percent)				0.00%
Expected term				7 years
Value of warrant to be issued is debt instrument is not paid					1,250,000
Stock issued (in shares)		454,545
Loans payable | Credit agreement | Contingently Issuable Warrant
Loan and Security Agreements [Line Items]
Expected volatility rate (as percent)				81.40%
Risk free interest rate (as percent)				1.54%
Dividend rate (as percent)				0.00%
Expected term				7 years
Value of warrant to be issued is debt instrument is not paid				$ 1,250,000	$ 1,250,000
Loans payable | Credit agreement | Annual Aggregate Revenue Up To And Including $20 million
Loan and Security Agreements [Line Items]
Percent of aggregate revenue for quarterly payments				8.50%
Annual aggregate revenue limit				$ 20,000,000
Loans payable | Credit agreement | Annual Aggregate Revenue Greater Than $20 Million Up To And Including $30 Million
Loan and Security Agreements [Line Items]
Percent of aggregate revenue for quarterly payments				7.00%
Loans payable | Credit agreement | Annual Aggregate Revenue Greater Than $20 Million Up To And Including $30 Million | Minimum
Loan and Security Agreements [Line Items]
Annual aggregate revenue limit				$ 20,000,000
Loans payable | Credit agreement | Annual Aggregate Revenue Greater Than $20 Million Up To And Including $30 Million | Maximum
Loan and Security Agreements [Line Items]
Annual aggregate revenue limit				$ 30,000,000
Loans payable | Credit agreement | Annual Aggregate Revenue Greater Than $30 million
Loan and Security Agreements [Line Items]
Percent of aggregate revenue for quarterly payments				5.00%
Annual aggregate revenue limit				$ 30,000,000
Loans payable | Credit agreement | LIBOR
Loan and Security Agreements [Line Items]
Spread on variable rate (as percent)				14.00%	14.00%