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EQUITY (Details) - USD ($)
 1 Months Ended 3 Months Ended 9 Months Ended
Jan. 31, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Jan. 31, 2016
EQUITY              
Par value (in dollars per share)   $ 0   $ 0   $ 0  
Shares of common stock repurchased       697,483 636,922    
Common stock, par value (in dollars per share)   $ 0   $ 0   $ 0  
Other operating expense   $ 4,518,000 $ 3,989,000 $ 12,155,000 $ 11,969,000    
Central Pacific Bank              
EQUITY              
Statutory retained earnings   $ 89,300,000   89,300,000      
Common Stock              
EQUITY              
Up to value of shares repurchased       $ 21,300,000      
Shares of common stock repurchased       697,483      
Common Stock | 2016 Repurchase Plan              
EQUITY              
Up to value of shares repurchased $ 100,000            
Shares of common stock repurchased 1,750            
Amount authorized under the Repurchase Plan $ 30,000,000.0           $ 30,000,000.0
Common Stock | 2017 Repurchase Plan              
EQUITY              
Up to value of shares repurchased       $ 21,300,000      
Shares of common stock repurchased       695,733