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	29,853	0	0	29,853	0
Other comprehensive income, net of tax	2,902	0	0	0	2,902
Common stock dividends - $0.54, and $0.52 per share at June 30, 2018 and 2017 respectively.	(12,561)	0	0	(12,561)	0
Stock compensation expense	1,052	0	1,052	0	0
Common stock issued pursuant to:
Stock option plan - 17,927 and 27, 284 shares at June 30, 2018 and 2017, respectively	518	27	491	0	0
Employee stock purchase plan - 13, 821 and 8, 565 shares at June 30, 2018 and 2017 respectively	299	9	290
Restricted stock - 37, 705and 47, 064 shares at June 30, 2018 and 2017, respectively	(952)	47	(999)	0	0
Balance at at Jun. 30, 2017	554,683	23,984	166,705	367,706	(3,712)
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 - $0.54, and $0.52 per share at June 30, 2018 and 2017 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 Bankshares Inc. - 11,446,197 shares	446,640	11,446	435,194	0	0
Stock option plan - 17,927 and 27, 284 shares at June 30, 2018 and 2017, respectively	370	18	352	0	0
Employee stock purchase plan - 13, 821 and 8, 565 shares at June 30, 2018 and 2017 respectively	459	14	445	0	0
Restricted stock - 37, 705and 47, 064 shares at June 30, 2018 and 2017, 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)