Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details)

v3.8.0.1
FAIR VALUE MEASUREMENTS (Schedule of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
ASSETS    
Securities available for sale, at fair value $ 974,222 $ 946,764
Loans held for sale 40,662 36,487
Cash flow hedges 49 211
Fair value hedges 1,598 1,437
Best efforts forward delivery commitments 12 1,469
LIABILITIES    
Interest rate swap 1,350 1,005
Cash flow hedges 8,005 9,619
Fair value hedges 76 296
Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 0 0
Loans held for sale 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Best efforts forward delivery commitments 0 0
LIABILITIES    
Interest rate swap 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 974,222 946,764
Loans held for sale 40,662 36,487
Cash flow hedges 49 211
Fair value hedges 1,598 1,437
Best efforts forward delivery commitments 0 0
LIABILITIES    
Interest rate swap 1,350 1,005
Cash flow hedges 8,005 9,619
Fair value hedges 76 296
Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Loans held for sale 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Best efforts forward delivery commitments 12 1,469
LIABILITIES    
Interest rate swap 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Recurring    
ASSETS    
Loans held for sale 40,662 36,487
Cash flow hedges 49 211
Fair value hedges 1,598 1,437
Best efforts forward delivery commitments 12 1,469
LIABILITIES    
Interest rate swap 1,350 1,005
Cash flow hedges 8,005 9,619
Fair value hedges 76 296
Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Loans held for sale 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Best efforts forward delivery commitments 0 0
LIABILITIES    
Interest rate swap 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Loans held for sale 40,662 36,487
Cash flow hedges 49 211
Fair value hedges 1,598 1,437
Best efforts forward delivery commitments 0 0
LIABILITIES    
Interest rate swap 1,350 1,005
Cash flow hedges 8,005 9,619
Fair value hedges 76 296
Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Loans held for sale 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Best efforts forward delivery commitments 12 1,469
LIABILITIES    
Interest rate swap 0 0
Cash flow hedges 0 0
Fair value hedges 0 0
Obligations of States and Political Subdivisions    
ASSETS    
Securities available for sale, at fair value 301,824 275,890
Obligations of States and Political Subdivisions | Recurring    
ASSETS    
Securities available for sale, at fair value 301,824 275,890
Obligations of States and Political Subdivisions | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 0 0
Obligations of States and Political Subdivisions | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 301,824 275,890
Obligations of States and Political Subdivisions | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Corporate and Other Bonds    
ASSETS    
Securities available for sale, at fair value 113,880 121,780
Corporate and Other Bonds | Recurring    
ASSETS    
Securities available for sale, at fair value 113,880 121,780
Corporate and Other Bonds | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 0 0
Corporate and Other Bonds | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 113,880 121,780
Corporate and Other Bonds | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Mortgage Backed Securities    
ASSETS    
Securities available for sale, at fair value 548,858 535,286
Mortgage Backed Securities | Recurring    
ASSETS    
Securities available for sale, at fair value 548,858 535,286
Mortgage Backed Securities | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 0 0
Mortgage Backed Securities | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 548,858 535,286
Mortgage Backed Securities | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Other Securities    
ASSETS    
Securities available for sale, at fair value 9,660 13,808
Other Securities | Recurring    
ASSETS    
Securities available for sale, at fair value 9,660 13,808
Other Securities | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Securities available for sale, at fair value 0 0
Other Securities | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Securities available for sale, at fair value 9,660 13,808
Other Securities | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Securities available for sale, at fair value 0 0
Interest Rate Swap    
ASSETS    
Interest rate derivatives 1,350 1,005
Interest Rate Swap | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Interest rate derivatives 0 0
Interest Rate Swap | Significant Other Observable Inputs Level 2    
ASSETS    
Interest rate derivatives 1,350 1,005
Interest Rate Swap | Significant Unobservable Inputs Level 3    
ASSETS    
Interest rate derivatives 0 0
Interest Rate Swap | Recurring    
ASSETS    
Interest rate derivatives 1,350 1,005
Interest Rate Swap | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Interest rate derivatives 0 0
Interest Rate Swap | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Interest rate derivatives 1,350 1,005
Interest Rate Swap | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Interest rate derivatives 0 0
Interest Rate Lock Commitments    
ASSETS    
Interest rate derivatives 559 610
Interest Rate Lock Commitments | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Interest rate derivatives 0 0
Interest Rate Lock Commitments | Significant Other Observable Inputs Level 2    
ASSETS    
Interest rate derivatives 0 0
Interest Rate Lock Commitments | Significant Unobservable Inputs Level 3    
ASSETS    
Interest rate derivatives 559 610
Interest Rate Lock Commitments | Recurring    
ASSETS    
Interest rate derivatives 559 610
Interest Rate Lock Commitments | Recurring | Quoted Prices in Active Markets for Identical Assets Level 1    
ASSETS    
Interest rate derivatives 0 0
Interest Rate Lock Commitments | Recurring | Significant Other Observable Inputs Level 2    
ASSETS    
Interest rate derivatives 0 0
Interest Rate Lock Commitments | Recurring | Significant Unobservable Inputs Level 3    
ASSETS    
Interest rate derivatives $ 559 $ 610