REVENUE FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Revenue recognition
Net interest income	$ 52,205	$ 53,946	$ 124,943	$ 126,245
Noninterest income:
Service charges on deposit accounts	2,451	3,598	5,587	6,901
Net refund transfer fees	2,913	3,629	18,736	20,729
Mortgage banking income	8,398	2,416	13,193	3,955
Interchange fee income	2,808	3,257	5,360	6,014
Program fees	1,138	1,037	3,762	2,111
Increase in cash surrender value of BOLI	395	377	784	759
Net gains (losses) on OREO	1	90	4	220
Other	647	721	1,894	1,853
Total noninterest income	18,751	15,125	49,320	42,542
Total net revenue	$ 70,956	$ 69,071	$ 174,263	$ 168,787
Net-revenue concentration (as percent)	100.00%	100.00%	100.00%	100.00%
Writedowns during entity's holding of property (as a percent)			10.00%
Core Banking
Revenue recognition
Net interest income	$ 45,517	$ 46,004	$ 90,658	$ 90,348
Noninterest income:
Service charges on deposit accounts	2,455	3,598	5,604	6,901
Mortgage banking income	8,398	2,416	13,193	3,955
Interchange fee income	2,724	3,168	5,217	5,794
Increase in cash surrender value of BOLI	395	377	784	759
Net gains (losses) on OREO	1	90	4	220
Other	576	689	1,812	1,194
Total noninterest income	14,549	10,338	26,614	18,823
Total net revenue	$ 60,066	$ 56,342	$ 117,272	$ 109,171
Net-revenue concentration (as percent)	84.00%	82.00%	67.00%	65.00%
Traditional Banking
Revenue recognition
Net interest income	$ 39,035	$ 41,877	$ 79,656	$ 83,224
Noninterest income:
Service charges on deposit accounts	2,438	3,585	5,576	6,878
Interchange fee income	2,724	3,168	5,217	5,794
Increase in cash surrender value of BOLI	395	377	784	759
Net gains (losses) on OREO	1	90	4	220
Other	568	633	1,780	1,098
Total noninterest income	6,126	7,853	13,361	14,749
Total net revenue	$ 45,161	$ 49,730	$ 93,017	$ 97,973
Net-revenue concentration (as percent)	63.00%	72.00%	53.00%	58.00%
Warehouse Lending
Revenue recognition
Net interest income	$ 6,063	$ 3,957	$ 10,370	$ 6,852
Noninterest income:
Service charges on deposit accounts	17	13	28	23
Total noninterest income	17	13	28	23
Total net revenue	$ 6,080	$ 3,970	$ 10,398	$ 6,875
Net-revenue concentration (as percent)	9.00%	6.00%	6.00%	4.00%
Mortgage Banking
Revenue recognition
Net interest income	$ 419	$ 170	$ 632	$ 272
Noninterest income:
Mortgage banking income	8,398	2,416	13,193	3,955
Other	8	56	32	96
Total noninterest income	8,406	2,472	13,225	4,051
Total net revenue	$ 8,825	$ 2,642	$ 13,857	$ 4,323
Net-revenue concentration (as percent)	12.00%	4.00%	8.00%	3.00%
Republic Processing Group
Revenue recognition
Net interest income	$ 6,688	$ 7,942	$ 34,285	$ 35,897
Noninterest income:
Service charges on deposit accounts	(4)		(17)
Net refund transfer fees	2,913	3,629	18,736	20,729
Interchange fee income	84	89	143	220
Program fees	1,138	1,037	3,762	2,111
Other	71	32	82	659
Total noninterest income	4,202	4,787	22,706	23,719
Total net revenue	$ 10,890	$ 12,729	$ 56,991	$ 59,616
Net-revenue concentration (as percent)	16.00%	18.00%	33.00%	35.00%
Tax Refund Solutions
Revenue recognition
Net interest income	$ 1,081	$ 710	$ 21,606	$ 21,148
Noninterest income:
Service charges on deposit accounts	(4)		(17)
Net refund transfer fees	2,913	3,629	18,736	20,729
Interchange fee income	84	89	143	220
Program fees	618	50	930	196
Other	71		82
Total noninterest income	3,682	3,768	19,874	21,145
Total net revenue	$ 4,763	$ 4,478	$ 41,480	$ 42,293
Net-revenue concentration (as percent)	7.00%	6.00%	24.00%	25.00%
Republic Credit Solutions
Revenue recognition
Net interest income	$ 5,607	$ 7,232	$ 12,679	$ 14,749
Noninterest income:
Program fees	520	987	2,832	1,915
Other		32		659
Total noninterest income	520	1,019	2,832	2,574
Total net revenue	$ 6,127	$ 8,251	$ 15,511	$ 17,323
Net-revenue concentration (as percent)	9.00%	12.00%	9.00%	10.00%

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Noninterest income from interchange fees.

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The minimum percentage of write-down of other real estate owned.

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Income from mortgage banking.

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Represents fees earned on refund transfers or ("RTs"). RTs are products whereby a tax refund is issued to the taxpayer after the Bank has received the refund from the federal or state government. These fees are reported as non interest income.

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Noninterest income from service charges on deposit accounts.

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Earnings on or other increases in the value of the cash surrender value of bank owned life insurance policies.

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The net gain (loss) resulting from sales and other disposals of other real estate owned, increases (decreases) in the valuation allowance for foreclosed real estate, and write-downs of other real estate owned after acquisition or physical possession.

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