CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - UNAUDITED - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at at Dec. 31, 2017	$ 563,816	$ 23,996	$ 168,188	$ 378,489	$ (6,857)
Net income	46,064	0	0	46,064	0
Other comprehensive income, net of tax	(12,222)	0	0	0	(12,222)
Common stock dividends - $0.30 and $0.28 per share for the quarter; $0.58 and $0.54 per share for year to date June 30, 2019 and 2018 respectively	(19,268)	0	0	(19,268)	0
Stock compensation expense	1,250	0	1,250	0	0
Common stock issued pursuant to:
Acquisition of WashingtonFirst - 11,446,197 shares	446,640	11,446	435,194	0	0
Stock option plan - 4,142; 5,574 shares for the quarter, and 10, 897; 17,927 shares year to date June 30, 2019 and 2018 respectively	370	18	352	0	0
Employee stock purchase plan - 10,004; 6,909 shares for the quarter and 17,927; 13,821 shares for year to date June 30 2019, 2018 respectively	459	14	445	0	0
Restricted stock - 42,830; 36,191 shares for the quarter and 54,789; 37,705 shares for year to date June 30 2019 and 2018 respectively	(760)	38	(798)	0	0
Reclassfication of tax effects from other comprehensive income	0	0	0	1,477	(1,477)
Balance at at Jun. 30, 2018	1,026,349	35,512	604,631	406,762	(20,556)
Balance at at Mar. 31, 2018	1,014,608	35,463	604,399	392,364	(17,618)
Net income	24,399	0	0	24,399	0
Other comprehensive income, net of tax	(2,938)	0	0	0	(2,938)
Common stock dividends - $0.30 and $0.28 per share for the quarter; $0.58 and $0.54 per share for year to date June 30, 2019 and 2018 respectively	(10,001)	0	0	(10,001)	0
Stock compensation expense	668	0	668	0	0
Common stock issued pursuant to:
Stock option plan - 4,142; 5,574 shares for the quarter, and 10, 897; 17,927 shares year to date June 30, 2019 and 2018 respectively	138	6	132	0	0
Employee stock purchase plan - 10,004; 6,909 shares for the quarter and 17,927; 13,821 shares for year to date June 30 2019, 2018 respectively	235	7	228	0	0
Restricted stock - 42,830; 36,191 shares for the quarter and 54,789; 37,705 shares for year to date June 30 2019 and 2018 respectively	(760)	36	(796)	0	0
Balance at at Jun. 30, 2018	1,026,349	35,512	604,631	406,762	(20,556)
Balance at at Dec. 31, 2018	1,067,903	35,531	606,573	441,553	(15,754)
Net income	58,593	0	0	58,593	0
Other comprehensive income, net of tax	12,189	0	0	0	12,189
Common stock dividends - $0.30 and $0.28 per share for the quarter; $0.58 and $0.54 per share for year to date June 30, 2019 and 2018 respectively	(20,757)	0	0	(20,757)	0
Stock compensation expense	1,473	0	1,473	0	0
Common stock issued pursuant to:
Director's stock purchase plan - 867 shares for quarter to date and year to date June 30 2019	30	1	29	0	0
Stock option plan - 4,142; 5,574 shares for the quarter, and 10, 897; 17,927 shares year to date June 30, 2019 and 2018 respectively	224	11	213	0	0
Employee stock purchase plan - 10,004; 6,909 shares for the quarter and 17,927; 13,821 shares for year to date June 30 2019, 2018 respectively	492	17	475	0	0
Restricted stock - 42,830; 36,191 shares for the quarter and 54,789; 37,705 shares for year to date June 30 2019 and 2018 respectively	(702)	55	(757)	0	0
Balance at at Jun. 30, 2019	1,119,445	35,615	608,006	479,389	(3,565)
Balance at at Mar. 31, 2019	1,095,848	35,557	607,479	461,862	(9,050)
Net income	28,276	0	0	28,276	0
Other comprehensive income, net of tax	5,485	0	0	0	5,485
Common stock dividends - $0.30 and $0.28 per share for the quarter; $0.58 and $0.54 per share for year to date June 30, 2019 and 2018 respectively	(10,749)	0	0	(10,749)	0
Stock compensation expense	783	0	783	0	0
Common stock issued pursuant to:
Director's stock purchase plan - 867 shares for quarter to date and year to date June 30 2019	30	1	29	0	0
Stock option plan - 4,142; 5,574 shares for the quarter, and 10, 897; 17,927 shares year to date June 30, 2019 and 2018 respectively	95	4	91	0	0
Employee stock purchase plan - 10,004; 6,909 shares for the quarter and 17,927; 13,821 shares for year to date June 30 2019, 2018 respectively	278	10	268	0	0
Restricted stock - 42,830; 36,191 shares for the quarter and 54,789; 37,705 shares for year to date June 30 2019 and 2018 respectively	(601)	43	(644)	0	0
Balance at at Jun. 30, 2019	$ 1,119,445	$ 35,615	$ 608,006	$ 479,389	$ (3,565)