CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Preferred Stock	Common Stock	Retained Earnings	Accumulated Other Comprehensive Income / (Loss)	Total
Balance at Dec. 31, 2014	$ 19,519	$ 133,676	$ 33,014	$ (1,851)	$ 184,358
Balance (in shares) at Dec. 31, 2014	21,004	26,503,505
Increase (Decrease) in Shareholders' Equity
Net income			16,497		16,497
Other comprehensive loss				(4,369)	(4,369)
Issuance of 5,456,713 common shares to acquire Focus Business Bank, net of offering costs of $144		$ 58,134			58,134
Issuance of common shares to acquire Focus Business Bank, net of offering costs of $144 (in shares)		5,456,713
Issuance of restricted stock awards, net (in shares)		98,855
Amortization of restricted stock awards, net of forfeitures and taxes		$ 265			265
Cash dividend declared			(10,738)		(10,738)
Stock option expense, net of forfeitures and taxes		974			974
Stock options exercised		$ 315			315
Stock options exercised (in shares)		54,406
Balance at Dec. 31, 2015	$ 19,519	$ 193,364	38,773	(6,220)	245,436
Balance (in shares) at Dec. 31, 2015	21,004	32,113,479
Increase (Decrease) in Shareholders' Equity
Net income			27,381		27,381
Other comprehensive loss				(1,694)	(1,694)
Preferred stock exchanged for common stock	$ (19,519)
Preferred stock exchanged for common stock (in shares)	(21,004)
Preferred stock exchanged for common stock		$ 19,519
Preferred stock exchanged for common stock (in shares)		5,601,000
Issuance of restricted stock awards, net (in shares)		79,112
Amortization of restricted stock awards, net of forfeitures and taxes		$ 479			479
Cash dividend declared			(13,627)		(13,627)
Stock option expense, net of forfeitures and taxes		937			937
Stock options exercised		$ 938			938
Stock options exercised (in shares)		147,416
Balance at Dec. 31, 2016		$ 215,237	52,527	(7,914)	259,850
Balance (in shares) at Dec. 31, 2016		37,941,007
Increase (Decrease) in Shareholders' Equity
Net income			23,828		23,828
Other comprehensive loss				(319)	(319)
Issuance of restricted stock awards, net (in shares)		64,136
Amortization of restricted stock awards, net of forfeitures and taxes		$ 912			912
Cash dividend declared			(15,238)		(15,238)
Reclassification associated with the Adoption of ASU 2018-02			1,019	(1,019)
Stock option expense, net of forfeitures and taxes		838			838
Stock options exercised		$ 1,368			1,368
Stock options exercised (in shares)		195,740
Balance at Dec. 31, 2017		$ 218,355	$ 62,136	$ (9,252)	$ 271,239
Balance (in shares) at Dec. 31, 2017		38,200,883