Annual report pursuant to Section 13 and 15(d)

Securities (Details)

v3.8.0.1
Securities (Details) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis $ 243,619 $ 235,903
Gross Unrealized Gains 3,879 2,587
Gross Unrealized Losses (3,008) (4,865)
Estimated Fair Value 244,490 233,625
Municipal securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 100,088 95,242
Gross Unrealized Gains 3,709 2,146
Gross Unrealized Losses (50) (643)
Estimated Fair Value 103,747 96,745
U.S. government sponsored entities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 3,996 16,643
Gross Unrealized Gains 0 0
Gross Unrealized Losses (106) (369)
Estimated Fair Value 3,890 16,274
Collateralized mortgage obligations and residential mortgage-backed securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 134,224 118,807
Gross Unrealized Gains 170 441
Gross Unrealized Losses (1,456) (1,273)
Estimated Fair Value 132,938 117,975
Collateralized Debt Obligations [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 4,835 4,989
Gross Unrealized Gains 0 0
Gross Unrealized Losses (1,396) (2,580)
Estimated Fair Value 3,439 2,409
Money market fund [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 476 222
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Estimated Fair Value $ 476 $ 222