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STOCK-BASED COMPENSATION - 2015 EIP Restricted Stock Units (Details) - 2015 EIP Plan - Restricted Stock Units
$ / shares in Units, $ in Thousands
3 Months Ended 12 Months Ended
Jul. 07, 2016
shares
Feb. 17, 2016
item
shares
Mar. 31, 2017
USD ($)
$ / shares
shares
Mar. 31, 2016
USD ($)
Dec. 31, 2016
$ / shares
shares
Number of Shares          
Balance at the beginning of the period (in shares)     66,666    
Granted (in shares)     292,398    
Vested (in shares)   23,286      
Balance at the end of the period (in shares)     359,064   66,666
Vested, post stock reverse split (in shares) 2,328        
Number of resignations from the Board of Directors | item   2      
Weighted Average Fair Value          
Balance at the beginning of the period (in dollars per share) | $ / shares     $ 5.10    
Granted (in dollars per share) | $ / shares     11.13    
Balance at the end of the period (in dollars per share) | $ / shares     $ 10.01   $ 5.10
Weighted-average remaining contractual life     2 years 1 month 2 days    
Additional disclosures          
Total fair value of shares vested | $     $ 0 $ 12  
Unrecognized compensation cost related to nonvested stock awards          
Unrecognized compensation cost | $     $ 3,223    
Weighted-average period for recognition of unrecognized compensation cost     2 years 1 month 2 days    
General and Administrative Expense.          
Additional disclosures          
Recognized nonvested stock amortization expense | $     $ 159 $ 155  
Vested RSUs          
Number of Shares          
Number of shares vested     7,440    
Weighted Average Fair Value          
Vested (in dollars per share) | $ / shares     $ 71.18    
Directors          
Nonvested Stock Awards          
Vesting period of awards     3 years    
Number of Shares          
Number of common shares outstanding in respect of RSUs     3,138   3,138