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EARNINGS PER SHARE - Additional Information (Details) - shares
1 Months Ended 12 Months Ended
Feb. 15, 2017
Dec. 14, 2016
May 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Weighted Average Shares Used In Computing Earnings Per Share [Line Items]            
Antidilutive stock options outstanding (in shares)       12,900 14,400 20,500
Shares of common stock issued upon vesting of restricted stock (in shares)       79,621 41,375 38,034
RSA            
Weighted Average Shares Used In Computing Earnings Per Share [Line Items]            
Percentage of common stock issued in reorganization to existing shareholders   5.00%        
Percentage of warrants issued in reorganization (up to)   15.00%        
RSA | Subsequent Event            
Weighted Average Shares Used In Computing Earnings Per Share [Line Items]            
Percentage of common stock issued in reorganization to existing shareholders 5.00%          
Percentage of warrants issued in reorganization (up to) 15.00%          
IPO            
Weighted Average Shares Used In Computing Earnings Per Share [Line Items]            
Common stock issued (in shares)     575,000