v3.3.1.900
Investments - Schedule of Available-for-sale and Held-to-Maturity Securities Reconciliation (Details) - USD ($)
$ in Thousands
Dec. 31, 2015
Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost $ 43,714 $ 45,985
Gross Unrealized Gains 63 150
Gross Unrealized Losses (336) (340)
Fair Value 43,441 45,795
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 450,915 396,782
Gross Unrealized Gains 3,698 5,501
Gross Unrealized Losses (2,843) (2,137)
Fair Value 451,770 400,146
Obligations of U.S. Government-sponsored enterprises    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 98,699 91,355
Gross Unrealized Gains 309 624
Gross Unrealized Losses 0 (153)
Fair Value 99,008 91,826
Obligations of states and political subdivisions    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 40,700 33,997
Gross Unrealized Gains 1,343 1,300
Gross Unrealized Losses (342) (416)
Fair Value 41,701 34,881
Residential mortgage-backed securities    
Schedule of Available-for-sale Securities [Line Items]    
Amortized Cost 311,516 271,430
Gross Unrealized Gains 2,046 3,577
Gross Unrealized Losses (2,501) (1,568)
Fair Value 311,061 273,439
Obligations of states and political subdivisions    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 14,831 14,900
Gross Unrealized Gains 63 0
Gross Unrealized Losses (50) (325)
Fair Value 14,844 14,575
Residential mortgage-backed securities    
Schedule of Held-to-maturity Securities [Line Items]    
Amortized Cost 28,883 31,085
Gross Unrealized Gains 0 150
Gross Unrealized Losses (286) (15)
Fair Value $ 28,597 $ 31,220