Revenue from Contracts with Customers - Schedule of Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Non-interest Income
Service charges on deposit accounts	$ 1,271	$ 1,165	$ 2,518	$ 2,255
Wealth and asset management fees	1,090	952	2,120	1,823
Mortgage banking	310	247	518	431
Card processing and interchange income	1,103	970	2,074	1,848
Net realized gains on available-for-sale securities	0	155	0	1,538
Other income	1,832	1,600	3,127	2,967
Total non-interest income	$ 5,606	$ 5,089	$ 10,357	$ 10,862