Quarterly report pursuant to Section 13 or 15(d)

Securities (Details)

v3.8.0.1
Securities (Details) - USD ($)
$ in Thousands
Mar. 31, 2018
Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis $ 245,708 $ 243,619
Gross Unrealized Gains 1,346 3,879
Gross Unrealized Losses (5,583) (3,008)
Estimated Fair Value 241,471 244,490
Municipal securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 91,552 100,088
Gross Unrealized Gains 1,307 3,709
Gross Unrealized Losses (774) (50)
Estimated Fair Value 92,085 103,747
U.S. government sponsored entities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 5,997 3,996
Gross Unrealized Gains 3 0
Gross Unrealized Losses (162) (106)
Estimated Fair Value 5,838 3,890
Collateralized mortgage obligations and residential mortgage-backed securities [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 142,412 134,224
Gross Unrealized Gains 36 170
Gross Unrealized Losses (3,279) (1,456)
Estimated Fair Value 139,169 132,938
Collateralized Debt Obligations [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 4,823 4,835
Gross Unrealized Gains 0 0
Gross Unrealized Losses (1,368) (1,396)
Estimated Fair Value 3,455 3,439
Money market fund [Member]    
Schedule of Available-for-sale Securities [Line Items]    
Cost Basis 924 476
Gross Unrealized Gains 0 0
Gross Unrealized Losses 0 0
Estimated Fair Value $ 924 $ 476