LOANS AND ALLOWANCE FOR LOAN AND LEASE LOSSES - ALLOWANCE FOR LOAN LOSSES (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Allowance for loan losses rollforward                      
Allowance for loan losses at beginning year       $ 27,491       $ 24,410 $ 27,491 $ 24,410 $ 23,026
Charge-offs                 (11,856) (3,972) (3,563)
Recoveries                 2,792 1,657 2,088
Net loan (charge-offs) recoveries                 (9,064) (2,315) (1,475)
Provision for loan and lease losses $ 5,004 $ 2,489 $ 1,814 5,186 $ 2,074 $ 2,233 $ 904 185 14,493 5,396 2,859
Allowance for loan losses at end of year 32,920       27,491       32,920 27,491 24,410
Consumer: Republic Processing Group Loans                      
Allowance for loan losses rollforward                      
Allowance for loan losses at beginning year       $ 1,699       $ 44 1,699 44  
Charge-offs                 (8,474) (971) (5)
Recoveries                 1,219 295 582
Net loan (charge-offs) recoveries                 (7,255) (676) 577
Provision for loan and lease losses                 10,548 2,331 (533)
Allowance for loan losses at end of year $ 4,992       $ 1,699       4,992 1,699 44
Core Banking Activities                      
Allowance for loan losses rollforward                      
Charge-offs                 (3,382) (3,001) (3,558)
Recoveries                 1,573 1,362 1,506
Net loan (charge-offs) recoveries                 (1,809) (1,639) (2,052)
Provision for loan and lease losses                 $ 3,945 $ 3,065 $ 3,392