Investment Securities - Summary of Investment Security Carrying and Fair Value (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 331,812	$ 291,759
Gross Unrealized Gains	520	333
Gross Unrealized Losses	1,113	979
Fair Value	331,219	291,113
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	899	903
Gross Unrealized Gains	23	56
Gross Unrealized Losses	0	0
Fair Value	922	959
U.S. Treasury and government sponsored entities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	264,267	238,116
Gross Unrealized Gains	150	150
Gross Unrealized Losses	1,056	830
Fair Value	263,361	237,436
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	18,184	10,227
Gross Unrealized Gains	26	117
Gross Unrealized Losses	53	18
Fair Value	18,157	10,326
U.S. Agency mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	2	818
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	10
Fair Value	2	809
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	44,437	39,049
Gross Unrealized Gains	295	57
Gross Unrealized Losses	0	88
Fair Value	44,732	39,018
Preferred stock
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,922	3,549
Gross Unrealized Gains	49	8
Gross Unrealized Losses	4	33
Fair Value	4,967	3,524
Municipal securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	899	903
Gross Unrealized Gains	23	56
Gross Unrealized Losses	0	0
Fair Value	$ 922	$ 959