CONSOLIDATED STATEMENTS OF INCOME AND COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Interest and dividend income:
Interest and fees on loans	$ 112,181	$ 110,213	$ 77,764
Interest and dividends on taxable securities	5,639	5,752	4,077
Interest and dividends on tax exempt securities	585	634	492
Interest and dividends on other earning assets	2,117	2,256	1,231
Interest on federal funds sold	2	52	6
Total interest and dividend income	120,524	118,907	83,570
Interest expense:
Interest on deposits	30,602	18,235	10,993
Interest on repurchase agreements	87	97	36
Interest on junior subordinated debt	589	575	253
Interest on senior subordinated notes	2,847	2,847	2,194
Interest on other borrowings	2,799	6,087	2,177
Total interest expense	36,924	27,841	15,653
Net interest income	83,600	91,066	67,917
Provision for loan losses	350	4,200	8,625
Net interest income after provision for loan losses	83,250	86,866	59,292
Noninterest income:
Account maintenance and deposit service fees	7,159	5,959	3,564
Income from bank-owned life insurance	1,699	1,983	929
Equity gain (loss) from mortgage affiliate	1,191	(894)	(345)
Gain on sales of investment securities			255
Recoveries related to acquired charged-off loans and investment securities	1,537	2,610	757
Portion of OTTI recognized in other comprehensive income (before taxes)	(1,060)
Other	1,000	541	269
Total noninterest income	12,586	10,199	5,429
Noninterest expenses:
Salaries and benefits	26,261	27,706	20,285
Occupancy expenses	6,204	6,628	4,809
Furniture and equipment expenses	2,719	2,795	2,228
Amortization of core deposit intangible	1,418	1,445	845
Virginia franchise tax expense	2,251	1,839	969
Data processing expense	2,381	1,885	1,140
Telephone and communication expense	1,615	2,035	1,422
Net (gain) loss on other real estate owned	(38)	360	520
Professional fees	3,612	1,644	1,798
Merger expenses			9,426
Other operating expenses	10,169	7,423	5,707
Total noninterest expenses	56,592	53,760	49,149
Income before income taxes	39,244	43,305	15,572
Income tax expense	6,077	9,614	13,147
Net income	33,167	33,691	2,425
Other comprehensive income (loss):
Unrealized gain (loss) on available for sale securities	4,256	(1,548)	(309)
Non-credit component of other-than-temporary impairment on held-to-maturity securities			(255)
Accretion of amounts previously recorded upon transfer to held to maturity from available for sale	13	16	13
Net unrealized gain (loss)	4,269	(1,532)	(551)
Tax effect	897	(324)	(188)
Other comprehensive income (loss)	3,372	(1,208)	(363)
Comprehensive income	$ 36,539	$ 32,483	$ 2,062
Earnings per share, basic (in dollars per share)	$ 1.38	$ 1.40	$ 0.13
Earnings per share, diluted (in dollars per share)	$ 1.36	$ 1.39	$ 0.13