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STOCK-BASED COMPENSATION - Additional Information (Detail) - USD ($)
$ / shares in Units, $ in Millions
3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2017
Jun. 30, 2016
Jun. 30, 2017
Jun. 30, 2016
Dec. 31, 2018
May 24, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Granted shares of restricted stock     954,976      
Vested [1]     916,044      
Stock based compensation expense unrecognized related to nonvested shares of restricted stock $ 4.4   $ 4.4      
Period for cost recognition not yet recognized     1 year 4 months 24 days      
Weighted-Average Grant Date Fair Value of Stocks     $ 3.04      
Repurchased of common stock     326,653 186,703    
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period [2]     2,383,571      
Board Of Directors [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Granted shares of restricted stock     3,644      
Restricted stock vesting period     1 year      
U S Treasury And Government [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Class Of Warrant Or Right Outstanding 1,285,899   1,285,899      
Senior Executives            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Granted shares     272,959 441,942    
Weighted-Average Grant Date Fair Value of Stocks     $ 5.94 $ 3.2    
Repurchased of common stock     90,973 134,949    
Management [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Granted shares of restricted stock     951,332 1,786,137    
Restricted stock vesting period     2 years 2 years    
Omnibus Plan [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Authorized granting up shares           14,169,807
Restricted stock available for issuance 7,984,812   7,984,812      
Omnibus Plan [Member] | Senior Executives            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share based compensation cost     $ 1.6 $ 1.4    
Troubled Asset Relief Program [Member] | Management [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Percentage of Share vested during period     50.00% 50.00%    
Granted shares of restricted stock     838,332 1,546,137    
Vested     743,021      
Fair Value Of Restricted Stock Granted     $ 2.71 $ 1.43    
Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period     2,370,571      
Restricted Stock Forfeitures Percentage     50.00% 50.00%    
Restricted Stock [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Share based compensation cost $ 1.0 $ 1.0 $ 2.0 $ 1.9    
Repurchased of common stock     235,680 51,754    
Restricted Share Units Percentage         40.00%  
First Fifty Percentage Restricted Stock Nonvest Awards [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Percentage of Share vested during period         50.00%  
Other Fifty Percentage Restricted Stock Nonvest Awards [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Percentage of Share vested during period         50.00%  
Performance Shares [Member]            
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]            
Performance Share Based Awards Percentage         60.00%  
[1]
Includes 743,021 shares of restricted stock released from TARP restrictions.
[2]
Includes 2,370,571 of outstanding shares of restricted stock, subject to TARP requirements, that were forfeited as a result of the U.S. Treasury's sale of its remaining shares of the Corporation's common stock.