SEGMENT INFORMATION (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2015 segment	Mar. 31, 2014	Dec. 31, 2014
SEGMENT INFORMATION
Number of operating segments	4
SEGMENT INFORMATION
Net interest income	$ 29,022	$ 27,304
Provision for loan and lease losses	185	(703)
Net refund transfer fees	15,335	14,388
Mortgage banking income	1,353	486
Other non interest income	6,298	5,841
Total non-interest income	22,986	20,715
Total non interest expenses	31,074	30,199
Income before income tax expense	20,749	18,523
Income tax expense	6,961	6,539
Net income	13,788	11,984
Segment end of period total assets	3,952,187	3,507,172	3,747,013
Net interest margin (as percent)	3.14%	3.24%
Traditional Banking
SEGMENT INFORMATION
Net interest income	25,758	25,954
Provision for loan and lease losses	116	(268)
Other non interest income	5,397	5,072
Total non-interest income	5,397	5,072
Total non interest expenses	23,407	23,482
Income before income tax expense	7,632	7,812
Income tax expense	2,286	2,520
Net income	5,346	5,292
Segment end of period total assets	3,380,813	3,305,197
Net interest margin (as percent)	3.10%	3.27%
Warehouse Lending
SEGMENT INFORMATION
Net interest income	2,541	1,159
Provision for loan and lease losses	259	28
Other non interest income	5	2
Total non-interest income	5	2
Total non interest expenses	573	380
Income before income tax expense	1,714	753
Income tax expense	600	264
Net income	1,114	489
Segment end of period total assets	422,652	135,986
Net interest margin (as percent)	3.62%	3.97%
Mortgage Banking
SEGMENT INFORMATION
Net interest income	56	46
Mortgage banking income	1,353	486
Other non interest income	84	74
Total non-interest income	1,437	560
Total non interest expenses	1,285	1,210
Income before income tax expense	208	(604)
Income tax expense	73	(211)
Net income	135	(393)
Segment end of period total assets	18,002	8,062
Total Core Banking
SEGMENT INFORMATION
Net interest income	28,355	27,159
Provision for loan and lease losses	375	(240)
Mortgage banking income	1,353	486
Other non interest income	5,486	5,148
Total non-interest income	6,839	5,634
Total non interest expenses	25,265	25,072
Income before income tax expense	9,554	7,961
Income tax expense	2,959	2,573
Net income	6,595	5,388
Segment end of period total assets	3,821,467	3,449,245
Net interest margin (as percent)	3.14%	3.29%
Republic Processing Group
SEGMENT INFORMATION
Net interest income	667	145
Provision for loan and lease losses	(190)	(463)
Net refund transfer fees	15,335	14,388
Other non interest income	812	693
Total non-interest income	16,147	15,081
Total non interest expenses	5,809	5,127
Income before income tax expense	11,195	10,562
Income tax expense	4,002	3,966
Net income	7,193	6,596
Segment end of period total assets	$ 130,720	$ 57,927