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STOCK-BASED COMPENSATION - 2015 EIP Stock Options and Other (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended
Feb. 27, 2018
Mar. 23, 2017
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
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        
Stock Options            
Weighted Average Fair Value            
Stock options outstanding - nonvested and exercisable     255,608 133,000    
2015 EIP Plan            
Stock options            
Aggregate number of shares of common stock available for awards   2,750,000       400,000
2015 EIP Plan | Stock Options            
Stock options            
Vesting percentage of awards 33.00%          
Vesting period 3 years          
Unrecognized compensation cost            
Unamortized compensation cost     $ 1,143      
Future amortization of stock based compensation            
Remainder of 2018     608      
2019     392      
2020     127      
2021     $ 16      
Number of Options            
Outstanding at beginning of period (in shares)     88,667      
Granted (in shares) 122,608   122,608      
Outstanding at end of period (in shares)     211,275      
Weighted Average Exercise Price            
Outstanding at beginning of period (in dollars per share)     $ 11.13      
Granted (in dollars per share) $ 13.69   13.69      
Outstanding at end of period (in dollars per share)     12.62      
Weighted Average Fair Value            
Outstanding at beginning of period (in dollars per share)     6.41      
Granted (in dollars per share) $ 7.55   7.55      
Outstanding at end of period (in dollars per share)     7.07      
Weighted Average Exercise Price Of Outstanding Options     $ 12.36      
Options Outstanding, Weighted Average Remaining Contractual Life     5 years 6 months 7 days      
Options Exercisable, Number of options     44,333      
Options Exercisable, Weighted Average Exercise Price     $ 11.13      
Options Exercisable, Weighted Average Remaining Contractual Life     4 years 11 months 23 days      
Aggregate fair value $ 926          
Stock options outstanding - nonvested and exercisable     255,608   133,000  
Assumptions and Methodology            
Weighted average volatility rate (as a percent) 71.94%          
Risk-free interest rate ( as a percent) 2.53%          
Dividend rate ( as a percent) 0.00%          
Expected life (in years) 4 years          
2015 EIP Plan | Stock Options | General and Administrative Expense            
Stock options            
Amortization expense     $ 123 $ 20    
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