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RELATED-PARTY TRANSACTIONS - PL Capital Affiliates (Details) - USD ($)
$ in Thousands
3 Months Ended
Apr. 06, 2015
Mar. 31, 2017
Feb. 10, 2017
Feb. 08, 2017
Related Party Transaction [Line Items]        
Expenses from transactions with related parties $ 263      
Greater Than 5% Shareholder, PL Capital Advisors, LLC        
Related Party Transaction [Line Items]        
Ownership percentage     6.90%  
Expenses from transactions with related parties   $ 150    
Voting Common Stock | Greater Than 5% Shareholder, PL Capital Advisors, LLC        
Related Party Transaction [Line Items]        
Common stock, shares outstanding (in shares)     3,401,719  
Company ownership percentage maximum threshold       10.00%