Business Segment Information - Operating Statements (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016
Operating Income
Interest income	$ 24,697	$ 23,062
Total interest expense	871	758
Net interest income	23,826	22,304
Provision for loan losses	321	401
Net interest income after provision	23,505	21,903
Noninterest income	2,295	2,614
Noninterest expense	15,328	14,685
Income before income taxes	10,472	9,832
Income tax expense	3,934	3,726
Net income	6,538	6,106
Total assets	2,641,791	2,327,333	$ 2,570,880
Loans, net of deferred fees	1,513,287	1,395,264	1,502,607
Goodwill	45,664	45,664	$ 45,664
Banking
Operating Income
Interest income	21,969	20,208
Intersegment interest allocations	260	245
Total interest expense	871	758
Net interest income	21,358	19,695
Provision for loan losses	311	387
Net interest income after provision	21,047	19,308
Noninterest income	2,115	2,412
Noninterest expense	13,579	13,052
Intersegment expense allocations	133	175
Income before income taxes	9,716	8,843
Income tax expense	3,616	3,310
Net income	6,100	5,533
Total assets	2,584,288	2,271,411
Loans, net of deferred fees	1,470,450	1,353,315
Goodwill	32,620	32,620
Factoring
Operating Income
Interest income	2,728	2,854
Intersegment interest allocations	(260)	(245)
Net interest income	2,468	2,609
Provision for loan losses	10	14
Net interest income after provision	2,458	2,595
Noninterest income	180	202
Noninterest expense	1,749	1,633
Intersegment expense allocations	(133)	(175)
Income before income taxes	756	989
Income tax expense	318	416
Net income	438	573
Total assets	57,503	55,922
Loans, net of deferred fees	42,837	41,949
Goodwill	$ 13,044	$ 13,044