Annual report pursuant to Section 13 and 15(d)

FAIR VALUE MEASUREMENTS (Details)

v3.3.1.900
FAIR VALUE MEASUREMENTS (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
U.S. Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure $ 250,346 $ 186,031
U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure 101,824 96,097
States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 88,362 48,388
Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 1,901 2,287
Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 8,595 8,745
Level 1 Inputs [Member] | U.S. Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure $ 250,346 186,031
Level 1 Inputs [Member] | U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure  
Level 1 Inputs [Member] | States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure  
Level 1 Inputs [Member] | Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure  
Level 1 Inputs [Member] | Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure  
Level 2 Inputs [Member] | U.S. Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure  
Level 2 Inputs [Member] | U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure $ 101,824 96,097
Level 2 Inputs [Member] | States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure 88,362 48,388
Level 2 Inputs [Member] | Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure 1,901 2,287
Level 2 Inputs [Member] | Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure $ 8,595 $ 8,745
Fair Value, Inputs, Level 3 [Member] | U.S. Treasury [Member]    
ASSETS:    
Assets, Fair Value Disclosure
Fair Value, Inputs, Level 3 [Member] | U.S. Government Agency [Member]    
ASSETS:    
Assets, Fair Value Disclosure
Fair Value, Inputs, Level 3 [Member] | States and Political Subdivisions [Member]    
ASSETS:    
Assets, Fair Value Disclosure
Fair Value, Inputs, Level 3 [Member] | Mortgage-Backed Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure
Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]    
ASSETS:    
Assets, Fair Value Disclosure