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Long-term Debt (Details) - USD ($)		3 Months Ended
	May 29, 2015	Mar. 31, 2017	Mar. 31, 2016	Jun. 15, 2016	May 11, 2016	May 10, 2016
Debt Instrument [Line Items]
Number of shares callable by warrants (in shares)				1	1,100,000	16,000,000
Warrant exercise price (in dollars per share)				$ 3.06
Minimum liquidity covenant		$ 5,000,000
Interest expense		591,000	$ 657,000
Non-cash amortization		$ 200,000	$ 200,000
LIBOR [Member] | Interest Rate Floor [Member]
Debt Instrument [Line Items]
Basis variable rate	1.00%
Term Loan [Member]
Debt Instrument [Line Items]
Origination Date		May 29, 2015
Original Loan Amount	$ 17,700,000
Basis variable rate	7.95%
Maturity date		Jun. 01, 2019
Fees amount associated with loan	$ 1,100,000
Number of shares callable by warrants (in shares)	94,441
Warrant exercise price (in dollars per share)	$ 10.35
Date from which warrants are exercisable		Nov. 30, 2015
Warrant expiration date		May 29, 2025
Minimum liquidity covenant	$ 5,000,000
Debt instrument, covenant compliance		we were in compliance with all of the debt covenants under the Loan and Security Agreement.
Minimum [Member] | Term Loan [Member]
Debt Instrument [Line Items]
Interest rate	8.95%

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