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STOCK-BASED COMPENSATION - 2015 EIP Stock Options and Other (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended	6 Months Ended
	Mar. 23, 2017	Jun. 30, 2017	Jun. 30, 2017	Jul. 07, 2016	Jun. 26, 2015
Nonemployee Directors
Stock options
Maximum annual limit for grants (in shares)	500,000
Other Individuals
Stock options
Maximum annual limit for grants (in shares)	1,000,000
2015 EIP Plan
Stock options
Aggregate number of shares of common stock available for awards	2,750,000				4,000,000
Aggregate number of shares of common stock available for awards, reverse stock split				400,000
2015 EIP Plan | Stock Options
Unrecognized compensation cost
Unamortized compensation cost		$ 635	$ 635
Future amortization of stock based compensation
Reminder of 2017		294	294
2018		254	254
2019		$ 87	$ 87
Number of Options
Granted (in shares)			133,000
Outstanding at end of period		133,000	133,000
Weighted Average Exercise Price
Granted (in dollars per share)			$ 11.13
Outstanding at end of period (in dollars per share)		$ 11.13	11.13
Weighted Average Fair Value
Granted (in dollars per share)			6.41
Outstanding at end of period (in dollars per share)		$ 6.41	$ 6.41
Options Outstanding, Weighted Average Remaining Contractual Life			5 years 8 months 23 days
Options vested (in shares)			0
2015 EIP Plan | Stock Options | General and Administrative Expense.
Stock options
Amortization expense		$ 198	$ 218
2015 EIP Plan | Stock Options | John C. Wobensmith
Stock options
Vesting percentage of awards	33.33%
Vesting period	3 years
Number of Options
Granted (in shares)	133,000
Weighted Average Exercise Price
Granted (in dollars per share)	$ 11.13
Weighted Average Fair Value
Granted (in dollars per share)	$ 6.41
Aggregate fair value	$ 853
Assumptions and Methodology
Weighted average volatility rate (as a percent)	79.80%
Risk-free interest rate ( as a percent)	1.68%
Dividend rate ( as a percent)	0.00%
Expected life (in years)	3 years 9 months 11 days

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