Long-term Debt (Details) $ / shares in Units, $ in Thousands			12 Months Ended
	Jan. 29, 2016 USD ($) $ / shares shares	Dec. 30, 2015 USD ($) $ / shares shares	Dec. 31, 2016 USD ($) Tranche	Dec. 31, 2015 USD ($)
Long-term Debt [Abstract]
Term note, net of debt discount of $258 and $287, respectively; and deferred financing cost of $276 and $306, respectively			$ 40,727
Less: current portion			(1,714)	$ 0
Long-term debt			9,752	9,851
Repayment of debt			0	(10,000)
Term-Note Credit Facility [Member]
Long-term Debt [Abstract]
Term note, net of debt discount of $258 and $287, respectively; and deferred financing cost of $276 and $306, respectively			11,466	9,851
Less: current portion			(1,714)	0
Long-term debt			9,752	9,851
Unamortized discount on the long term debt			258	287
Deferred financing costs			276	306
Maturities of Long-term Debt [Abstract]
2017			1,714
2018			3,429
2019			3,429
2020			3,428
Total long-term debt			12,000
Assumptions used to value the warrants [Abstract]
Number of shares underlying warrants (in shares) | shares	99,057	650,442
Exercise price (in dollars per share) | $ / shares	$ 1.06	$ 1.13
Share price (in dollars per share) | $ / shares	$ 1.05	$ 1.11
Fair value of warrants	$ 47	$ 321
Volatility	50.00%	50.00%
Risk-free interest rate	1.80%	1.80%
Expected dividend yield	0.00%	0.00%
Expected warrant life	5 years	5 years
MidCap Financial Trust [Member] | Term-Note Credit Facility [Member]
Long-term Debt [Abstract]
Unamortized discount on the long term debt and deferred financing costs			534	$ 649
Maximum borrowing capacity under the agreement			$ 12,000
Number of tranches | Tranche			2
Repayment term			60 months
MidCap Financial Trust [Member] | Term-Note Credit Facility [Member] | LIBOR [Member]
Long-term Debt [Abstract]
Interest rate on credit facility			8.25%
LIBOR floor Rate			0.50%
MidCap Financial Trust [Member] | Term-Note Credit Facility [Member] | First Tranche [Member]
Long-term Debt [Abstract]
Proceeds from credit facility		$ 10,500
Repayment of debt		$ (10,000)
MidCap Financial Trust [Member] | Term-Note Credit Facility [Member] | Second Tranche [Member]
Long-term Debt [Abstract]
Proceeds from credit facility	$ 1,500