Investment Securities - Schedule of Gross Unrealized Losses on Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	$ 192,171	$ 173,912
More than 12 months, fair value	3,313	136
Total, fair value	195,484	174,048
Less than 12 months, unrealized losses	1,084	977
More than 12 months, unrealized losses	29	2
Total, unrealized losses	1,113	979
U.S. Treasury and government sponsored entities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	180,638	146,433
More than 12 months, fair value	489	36
Total, fair value	181,127	146,469
Less than 12 months, unrealized losses	1,051	829
More than 12 months, unrealized losses	5	1
Total, unrealized losses	1,056	830
Corporate bonds
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	0	19,874
More than 12 months, fair value	0	0
Total, fair value	0	19,874
Less than 12 months, unrealized losses	0	88
More than 12 months, unrealized losses	0	0
Total, unrealized losses	0	88
Municipal securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	11,533	4,454
More than 12 months, fair value	1,786	0
Total, fair value	13,319	4,454
Less than 12 months, unrealized losses	33	18
More than 12 months, unrealized losses	20	0
Total, unrealized losses	53	18
Mortgage-backed securities
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value		637
More than 12 months, fair value		100
Total, fair value		737
Less than 12 months, unrealized losses		9
More than 12 months, unrealized losses		1
Total, unrealized losses		10
Preferred stock
Schedule of Available-for-sale Securities [Line Items]
Less than 12 months, fair value	0	2,514
More than 12 months, fair value	1,038	0
Total, fair value	1,038	2,514
Less than 12 months, unrealized losses	0	33
More than 12 months, unrealized losses	4	0
Total, unrealized losses	$ 4	$ 33