Investment Securities - Summary Of Investment Security Carrying and Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 900	$ 903
Gross Unrealized Gains	32	56
Gross Unrealized Losses	0	0
Fair Value	932	959
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	299,349	291,759
Gross Unrealized Gains	1,055	333
Gross Unrealized Losses	47	979
Fair Value	300,357	291,113
U.S. Treasury and government sponsored entities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	244,805	238,116
Gross Unrealized Gains	709	150
Gross Unrealized Losses	9	830
Fair Value	245,505	237,436
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	9,261	10,227
Gross Unrealized Gains	35	117
Gross Unrealized Losses	27	18
Fair Value	9,269	10,326
U.S. Agency mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4	818
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	10
Fair Value	4	809
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	40,357	39,049
Gross Unrealized Gains	177	57
Gross Unrealized Losses	0	88
Fair Value	40,534	39,018
Preferred stock
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	4,922	3,549
Gross Unrealized Gains	134	8
Gross Unrealized Losses	11	33
Fair Value	5,045	3,524
Municipal securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	900	903
Gross Unrealized Gains	32	56
Gross Unrealized Losses	0	0
Fair Value	$ 932	$ 959