Business Segment Information - Operating Statements (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015	Dec. 31, 2015
Operating Income (Loss)
Interest income	$ 23,504	$ 18,175	$ 46,566	$ 35,541
Total interest expense	760	533	1,518	1,041
Net interest income	22,744	17,642	45,048	34,500
Provision (credit) for loan losses	351	22	752	(38)
Net interest income after provision	22,393	17,620	44,296	34,538
Noninterest income	3,660	2,164	6,274	4,090
Noninterest expense	14,381	12,617	29,066	24,893
Income before income taxes	11,672	7,167	21,504	13,735
Income tax expense	4,377	2,690	8,103	5,120
Net income	7,295	4,477	13,401	8,615
Total assets	2,378,292	1,680,206	2,378,292	1,680,206	$ 2,361,579
Loans, net of deferred fees	1,464,114	1,133,603	1,464,114	1,133,603	1,358,716
Goodwill	45,664	13,055	45,664	13,055	$ 45,664
Banking
Operating Income (Loss)
Interest income	20,301	15,037	40,509	29,341
Intersegment interest allocations	304	274	549	542
Total interest expense	760	533	1,518	1,041
Net interest income	19,845	14,778	39,540	28,842
Provision (credit) for loan losses	325	21	712	(37)
Net interest income after provision	19,520	14,757	38,828	28,879
Noninterest income	3,497	1,921	5,909	3,712
Noninterest expense	12,602	10,809	25,654	21,314
Intersegment expense allocations	214	79	389	154
Income before income taxes	10,629	5,948	19,472	11,431
Income tax expense	3,940	2,178	7,250	4,152
Net income	6,689	3,770	12,222	7,279
Total assets	2,311,058	1,622,804	2,311,058	1,622,804
Loans, net of deferred fees	1,412,317	1,091,309	1,412,317	1,091,309
Goodwill	32,620		32,620
Factoring
Operating Income (Loss)
Interest income	3,203	3,138	6,057	6,200
Intersegment interest allocations	(304)	(274)	(549)	(542)
Net interest income	2,899	2,864	5,508	5,658
Provision (credit) for loan losses	26	1	40	(1)
Net interest income after provision	2,873	2,863	5,468	5,659
Noninterest income	163	243	365	378
Noninterest expense	1,779	1,808	3,412	3,579
Intersegment expense allocations	(214)	(79)	(389)	(154)
Income before income taxes	1,043	1,219	2,032	2,304
Income tax expense	437	512	853	968
Net income	606	707	1,179	1,336
Total assets	67,234	57,402	67,234	57,402
Loans, net of deferred fees	51,797	42,294	51,797	42,294
Goodwill	$ 13,044	$ 13,055	$ 13,044	$ 13,055