Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS (Carrying Values and Estimated Fair Values of the Company's Financial Instruments) (Details)

v3.7.0.1
FAIR VALUE MEASUREMENTS (Carrying Values and Estimated Fair Values of the Company's Financial Instruments) (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Dec. 31, 2016
ASSETS    
Cash and cash equivalents $ 183,819 $ 179,237
Securities available for sale, at fair value 953,058 946,764
Held to maturity securities 205,611 202,315
Restricted stock 65,402 60,782
Loans held for sale 19,976 36,487
Net loans 6,518,399 6,265,443
Derivatives:    
Cash flow hedges 167 211
Fair value hedges 1,549 1,437
Best efforts forward delivery commitments   1,469
Accrued interest receivable 23,458 23,448
Bank owned life insurance 178,774 179,318
LIABILITIES    
Deposits 6,605,551 6,370,457
Borrowings 960,830 970,195
Accrued interest payable 4,209 2,230
Derivatives:    
Interest rate swap 897 1,005
Cash flow hedges 9,354 9,619
Fair value hedges 138 296
Best efforts forward delivery commitments 111  
Interest Rate Swap    
Derivatives:    
Interest rate swap 897 1,005
Interest Rate Lock Commitments    
Derivatives:    
Interest rate lock commitments 1,251 610
Carrying Value    
ASSETS    
Cash and cash equivalents 183,819 179,237
Securities available for sale, at fair value 953,058 946,764
Held to maturity securities 203,478 201,526
Restricted stock 65,402 60,782
Loans held for sale 19,976 36,487
Net loans 6,515,632 6,269,868
Derivatives:    
Cash flow hedges 167 211
Fair value hedges 1,549 1,437
Best efforts forward delivery commitments   1,469
Accrued interest receivable 23,458 23,448
Bank owned life insurance 178,774 179,318
LIABILITIES    
Deposits 6,614,195 6,379,489
Borrowings 980,866 990,089
Accrued interest payable 4,209 2,320
Derivatives:    
Interest rate swap 897 1,005
Cash flow hedges 9,354 9,619
Fair value hedges 138 296
Best efforts forward delivery commitments 111  
Carrying Value | Interest Rate Swap    
Derivatives:    
Interest rate swap 897 1,005
Carrying Value | Interest Rate Lock Commitments    
Derivatives:    
Interest rate lock commitments 1,251 610
Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Cash and cash equivalents 183,819 179,237
Securities available for sale, at fair value 0 0
Held to maturity securities 0 0
Restricted stock 0 0
Loans held for sale 0 0
Net loans 0 0
Derivatives:    
Cash flow hedges 0 0
Fair value hedges 0 0
Best efforts forward delivery commitments   0
Accrued interest receivable 0 0
Bank owned life insurance 0 0
LIABILITIES    
Deposits 0 0
Borrowings 0 0
Accrued interest payable 0 0
Derivatives:    
Interest rate swap 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Best efforts forward delivery commitments 0  
Quoted Prices in Active Markets for Identical Assets Level 1 | Interest Rate Swap    
Derivatives:    
Interest rate swap 0 0
Quoted Prices in Active Markets for Identical Assets Level 1 | Interest Rate Lock Commitments    
Derivatives:    
Interest rate lock commitments 0 0
Significant Other Observable Inputs Level 2    
ASSETS    
Cash and cash equivalents 0 0
Securities available for sale, at fair value 953,058 946,764
Held to maturity securities 205,611 202,315
Restricted stock 65,402 60,782
Loans held for sale 19,976 36,487
Net loans 0 0
Derivatives:    
Cash flow hedges 167 211
Fair value hedges 1,549 1,437
Best efforts forward delivery commitments   0
Accrued interest receivable 23,458 23,448
Bank owned life insurance 178,774 179,318
LIABILITIES    
Deposits 6,605,551 6,370,457
Borrowings 960,830 970,195
Accrued interest payable 4,209 2,230
Derivatives:    
Interest rate swap 897 1,005
Cash flow hedges 9,354 9,619
Fair value hedges 138 296
Best efforts forward delivery commitments 0  
Significant Other Observable Inputs Level 2 | Interest Rate Swap    
Derivatives:    
Interest rate swap 897 1,005
Significant Other Observable Inputs Level 2 | Interest Rate Lock Commitments    
Derivatives:    
Interest rate lock commitments 0 0
Significant Unobservable Inputs Level 3    
ASSETS    
Cash and cash equivalents 0 0
Securities available for sale, at fair value 0 0
Held to maturity securities 0 0
Restricted stock 0 0
Loans held for sale 0 0
Net loans 6,518,399 6,265,443
Derivatives:    
Cash flow hedges 0 0
Fair value hedges 0 0
Best efforts forward delivery commitments   1,469
Accrued interest receivable 0 0
Bank owned life insurance 0 0
LIABILITIES    
Deposits 0 0
Borrowings 0 0
Accrued interest payable 0 0
Derivatives:    
Interest rate swap 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Best efforts forward delivery commitments 111  
Significant Unobservable Inputs Level 3 | Interest Rate Swap    
Derivatives:    
Interest rate swap 0 0
Significant Unobservable Inputs Level 3 | Interest Rate Lock Commitments    
Derivatives:    
Interest rate lock commitments $ 1,251 $ 610