Long-term Debt (Details) $ in Thousands			3 Months Ended
	Jan. 29, 2016 USD ($)	Dec. 30, 2015 USD ($)	Mar. 31, 2018 USD ($) Tranche	Dec. 31, 2017 USD ($)
Long-term Debt [Abstract]
Less: current portion			$ (3,410)	$ (2,387)
Long-term debt			6,869	7,853
Term-Note Credit Facility [Member]
Long-term Debt [Abstract]
Term note, net of debt discount of $141 and $160, respectively; and deferred financing cost of $151 and $171, respectively			10,279	10,240
Less: current portion			(3,410)	(2,387)
Long-term debt			6,869	7,853
Unamortized discount on the long term debt			141	160
Deferred financing costs			151	$ 171
Maturities of Long-term Debt [Abstract]
Remaining in 2018			2,387
2019			4,092
2020			4,092
Total long-term debt			10,571
MidCap Financial Trust [Member] | Term-Note Credit Facility [Member]
Long-term Debt [Abstract]
Maximum borrowing capacity under the agreement			$ 12,000
Number of tranches | Tranche			2
Maturity date			Dec. 01, 2020
MidCap Financial Trust [Member] | Term-Note Credit Facility [Member] | LIBOR [Member]
Long-term Debt [Abstract]
Debt instrument term of variable rate			1 month
Debt instrument variable rate			8.25%
Interest rate			9.91%
MidCap Financial Trust [Member] | Term-Note Credit Facility [Member] | LIBOR [Member] | Minimum [Member]
Long-term Debt [Abstract]
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