Segment and Related Information (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019 USD ($)	Jun. 30, 2018 USD ($)	Jun. 30, 2019 USD ($) segment	Jun. 30, 2018 USD ($)	Dec. 31, 2018 USD ($)	[1]
Segment Reporting [Abstract]
Number of reportable segments | segment			2
Segment Reporting Information [Line Items]
Interest income	$ 25,211	$ 16,992	$ 43,307	$ 33,660
Interest expense	4,222	2,204	7,250	4,329
Noninterest income	3,682	3,563	7,133	6,896
Income (loss) before income taxes	(1,635)	7,379	5,939	14,597
Net income (loss)	(1,230)	5,980	4,773	11,792
Depreciation and amortization	1,011	544	1,471	1,087
Total assets	2,418,082	1,824,531	2,418,082	1,824,531	$ 1,862,866
Goodwill	84,633	43,872	84,633	43,872	$ 43,872
Capital expenditures	906	587	1,299	932
Operating Segments | Community Banking
Segment Reporting Information [Line Items]
Interest income	25,102	16,900	43,101	33,480
Interest expense	3,712	1,874	6,356	3,709
Noninterest income	2,543	2,111	4,603	4,174
Income (loss) before income taxes	(574)	7,071	6,946	14,097
Net income (loss)	(327)	5,725	5,670	11,378
Depreciation and amortization	1,009	541	1,467	1,081
Total assets	2,407,232	1,814,730	2,407,232	1,814,730
Goodwill	84,633	43,872	84,633	43,872
Capital expenditures	906	587	1,292	932
Operating Segments | Trust and Investment Services
Segment Reporting Information [Line Items]
Interest income	0	0	0	0
Interest expense	0	0	0	0
Noninterest income	1,119	1,155	2,180	2,306
Income (loss) before income taxes	559	567	1,039	1,020
Net income (loss)	455	459	835	824
Depreciation and amortization	2	3	4	6
Total assets	0	0	0	0
Goodwill	0	0	0	0
Capital expenditures	0	0	7	0
Other
Segment Reporting Information [Line Items]
Interest income	109	92	206	180
Interest expense	510	330	894	620
Noninterest income	20	297	350	416
Income (loss) before income taxes	(1,620)	(259)	(2,046)	(520)
Net income (loss)	(1,358)	(204)	(1,732)	(410)
Depreciation and amortization	0	0	0	0
Total assets	351,130	241,617	351,130	241,617
Goodwill	0	0	0	0
Capital expenditures	0	0	0	0
Intersegment Eliminations
Segment Reporting Information [Line Items]
Interest income	0	0	0	0
Interest expense	0	0	0	0
Noninterest income	0	0	0	0
Income (loss) before income taxes	0	0	0	0
Net income (loss)	0	0	0	0
Depreciation and amortization	0	0	0	0
Total assets	(340,280)	(231,816)	(340,280)	(231,816)
Goodwill	0	0	0	0
Capital expenditures	$ 0	$ 0	$ 0	$ 0

[1] Derived from audited consolidated financial statements.