Quarterly Results of Operations (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 31,911	$ 29,747	$ 30,071	$ 26,626	$ 22,536	$ 21,333	$ 19,314	$ 18,156	$ 118,356	$ 81,339	$ 63,800
Interest expense	3,074	3,051	2,978	2,952	2,770	2,014	1,533	1,387	12,057	7,704	5,356
Provision for Loan and Lease Losses	1,700	1,062	1,833	1,830	1,421	1,284	1,030	949	6,425	4,684	1,860
Noninterest income	4,217	4,378	4,380	1,470	4,903	4,168	2,388	1,918	14,441	13,377	8,811
Noninterest expense	18,539	17,374	17,214	20,469	16,468	13,343	11,641	13,541	73,591	54,993	50,815
Income tax provision	4,750	4,801	4,601	1,056	2,889	3,410	2,855	1,565	15,209	10,719	5,587
NET INCOME	$ 8,065	$ 7,837	$ 7,825	$ 1,789	$ 3,891	$ 5,450	$ 4,643	$ 2,632	$ 25,515	$ 16,616	$ 8,993
Earnings per share:
Basic (in dollars per share)	$ 0.38	$ 0.36	$ 0.36	$ 0.09	$ 0.23	$ 0.32	$ 0.28	$ 0.15	$ 1.21	$ 0.97	$ 0.57
Diluted (in dollars per share)	$ 0.37	$ 0.36	$ 0.36	$ 0.09	$ 0.23	$ 0.31	$ 0.27	$ 0.15	$ 1.19	$ 0.96	$ 0.54