Annual report pursuant to Section 13 and 15(d)

COMMITMENTS AND CONTINGENCIES (Schedule of Securities Pledged as Collateral) (Details)

v3.10.0.1
COMMITMENTS AND CONTINGENCIES (Schedule of Securities Pledged as Collateral) (Details) - USD ($)
$ in Thousands
Dec. 31, 2018
Dec. 31, 2017
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash $ 13,509 $ 23,870
Loans 3,337,289 2,390,509
Total pledged assets 3,732,286 2,951,852
Public deposits    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
Loans 0 0
Total pledged assets 300,576 439,954
Repurchase agreements    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
Loans 0 0
Total pledged assets 55,269 77,942
FHLB advances    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
Loans 3,337,289 2,390,509
Total pledged assets 3,337,777 2,391,387
Derivatives    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 13,509 23,870
Loans 0 0
Total pledged assets 15,447 27,526
Other purposes    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Cash 0 0
Loans 0 0
Total pledged assets 23,217 15,043
Available-for-sale Securities    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 374,081 339,991
Available-for-sale Securities | Public deposits    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 293,169 242,472
Available-for-sale Securities | Repurchase agreements    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 55,269 77,942
Available-for-sale Securities | FHLB advances    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 488 878
Available-for-sale Securities | Derivatives    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 1,938 3,656
Available-for-sale Securities | Other purposes    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 23,217 15,043
Held-to-maturity Securities    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 7,407 197,482
Held-to-maturity Securities | Public deposits    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 7,407 197,482
Held-to-maturity Securities | Repurchase agreements    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 0 0
Held-to-maturity Securities | FHLB advances    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 0 0
Held-to-maturity Securities | Derivatives    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged 0 0
Held-to-maturity Securities | Other purposes    
Financial Instruments Owned and Pledged as Collateral [Line Items]    
Securities pledged $ 0 $ 0