Business Segment Information - Operating Statements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Operating Income (Loss)
Interest income	$ 23,062	$ 17,366
Total interest expense	758	508
Net interest income	22,304	16,858
Provision (credit) for loan losses	401	(60)
Net interest income after provision	21,903	16,918
Noninterest income	2,614	1,926
Noninterest expense	14,685	12,276
Income before income taxes	9,832	6,568
Income tax expense	3,726	2,430
Net income	6,106	4,138
Total assets	2,327,333	1,652,887	$ 2,361,579
Loans, net of deferred fees	1,395,264	1,101,991	1,358,716
Goodwill	45,664	13,054	$ 45,664
Banking
Operating Income (Loss)
Interest income	20,208	14,304
Intersegment interest allocations	245	268
Total interest expense	758	508
Net interest income	19,695	14,064
Provision (credit) for loan losses	387	(58)
Net interest income after provision	19,308	14,122
Noninterest income	2,412	1,792
Noninterest expense	13,052	10,506
Intersegment expense allocation	175	75
Income before income taxes	8,843	5,483
Income tax expense	3,310	1,974
Net income	5,533	3,509
Total assets	2,271,411	1,593,176
Loans, net of deferred fees	1,353,315	1,057,437
Goodwill	32,620
Factoring
Operating Income (Loss)
Interest income	2,854	3,062
Intersegment interest allocations	(245)	(268)
Net interest income	2,609	2,794
Provision (credit) for loan losses	14	(2)
Net interest income after provision	2,595	2,796
Noninterest income	202	134
Noninterest expense	1,633	1,770
Intersegment expense allocation	(175)	(75)
Income before income taxes	989	1,085
Income tax expense	416	456
Net income	573	629
Total assets	55,922	59,711
Loans, net of deferred fees	41,949	44,554
Goodwill	$ 13,044	$ 13,054