Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS (Details)

v3.6.0.2
FAIR VALUE MEASUREMENTS (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
U.S. Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure $ 286,278 $ 250,346
U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure 131,640 101,824
States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 94,839 88,362
Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 1,430 1,901
Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 8,547 8,595
Level 1 Inputs [Member] | U.S. Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure 286,278 250,346
Level 1 Inputs [Member] | U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Level 1 Inputs [Member] | States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Level 1 Inputs [Member] | Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Level 1 Inputs [Member] | Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Level 2 Inputs [Member] | U.S. Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Level 2 Inputs [Member] | U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure 131,640 101,824
Level 2 Inputs [Member] | States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 94,839 88,362
Level 2 Inputs [Member] | Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 1,430 1,901
Level 2 Inputs [Member] | Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 8,547 8,595
Fair Value, Inputs, Level 3 [Member] | U.S. Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member] | U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member] | States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 0 0
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure $ 0 $ 0