CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance at at Dec. 31, 2016	$ 533,572	$ 23,901	$ 165,871	$ 350,414	$ (6,614)
Net income	15,112	0	0	15,112	0
Other comprehensive income, net of tax	1,080	0	0	0	1,080
Common stock dividends - $0.26, and $0.26 per share at March 31, 2018 and 2017 respectively.	(6,275)	0	0	(6,275)	0
Stock compensation expense	496	0	496	0	0
Common stock issued pursuant to:
Stock option plan - 12,253 and 17,362 shares at March 31 2018 and 2017, respectively	300	17	283	0	0
Employee stock purchase plan - 6,912 and 4,431 shares at March 31, 2018 and 2017 respectively	156	5	151
Restricted stock - 1,514 and 7,288 shares at March 31 2018 and 2017, respectively	(180)	7	(187)	0	0
Balance at at Mar. 31, 2017	544,261	23,930	166,614	359,251	(5,534)
Balance at at Dec. 31, 2017	563,816	23,996	168,188	378,489	(6,857)
Net income	21,665	0	0	21,665	0
Other comprehensive income, net of tax	(9,284)	0	0	0	(9,284)
Common stock dividends - $0.26, and $0.26 per share at March 31, 2018 and 2017 respectively.	(9,267)	0	0	(9,267)	0
Stock compensation expense	582	0	582	0	0
Common stock issued pursuant to:
Acquisition of WashingtonFirst Bankshares Inc. - 11,446,197 shares	446,640	11,446	435,194	0	0
Stock option plan - 12,253 and 17,362 shares at March 31 2018 and 2017, respectively	232	12	220	0	0
Employee stock purchase plan - 6,912 and 4,431 shares at March 31, 2018 and 2017 respectively	224	7	217	0	0
Restricted stock - 1,514 and 7,288 shares at March 31 2018 and 2017, respectively	0	2	(2)	0	0
Reclassfication of tax effects from other comprehensive income	0	0	0	1,477	(1,477)
Balance at at Mar. 31, 2018	$ 1,014,608	$ 35,463	$ 604,399	$ 392,364	$ (17,618)