Segment Information (Details) $ in Thousands	3 Months Ended							9 Months Ended
	Sep. 30, 2019 USD ($) bank	Jun. 30, 2019 USD ($)	Mar. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Sep. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Mar. 31, 2018 USD ($)	Sep. 30, 2019 USD ($) segment bank	Sep. 30, 2018 USD ($)
Segment Reporting Information [Line Items]
Number of segments | segment								2
Interest income	$ 17,837				$ 16,580			$ 52,021	$ 46,970
Interest expense	1,531				761			3,989	1,899
Net interest income	16,306				15,819			48,032	45,071
Benefit for loan losses	(2,075)				0			(1,025)	(300)
Other operating income	10,509				8,673			27,611	24,449
Other operating expense	19,324				18,099			56,223	51,500
Income before provision for income taxes	9,566				6,393			20,445	18,320
Provision for income taxes	2,028				1,129			4,334	3,164
Net income	7,538	$ 4,261	$ 4,312	$ 4,848	5,264	$ 5,830	$ 4,062	16,111	15,156
Total assets	1,616,631			1,502,988				1,616,631
Loans held for sale	$ 81,942			34,710				$ 81,942
Community Banking
Segment Reporting Information [Line Items]
Number of branches | bank	16							16
Interest income	$ 17,108				15,923			$ 50,377	45,443
Interest expense	1,108				565			3,256	1,435
Net interest income	16,000				15,358			47,121	44,008
Benefit for loan losses	(2,075)				0			(1,025)	(300)
Other operating income	2,944				2,770			9,798	8,124
Other operating expense	13,126				12,204			39,755	36,319
Income before provision for income taxes	7,893				5,924			18,189	16,113
Provision for income taxes	1,550				996			3,689	2,537
Net income	6,343				4,928			14,500	13,576
Total assets	1,499,700			1,443,745				1,499,700
Loans held for sale	0			0				0
Home Mortgage Lending
Segment Reporting Information [Line Items]
Interest income	729				657			1,644	1,527
Interest expense	423				196			733	464
Net interest income	306				461			911	1,063
Benefit for loan losses	0				0			0	0
Other operating income	7,565				5,903			17,813	16,325
Other operating expense	6,198				5,895			16,468	15,181
Income before provision for income taxes	1,673				469			2,256	2,207
Provision for income taxes	478				133			645	627
Net income	1,195				$ 336			1,611	$ 1,580
Total assets	116,931			59,243				116,931
Loans held for sale	$ 81,942			$ 34,710				$ 81,942