STOCKHOLDERS' EQUITY AND REGULATORY CAPITAL MATTERS - REGULATORY (Details) $ in Thousands	Dec. 31, 2019 USD ($) item	Dec. 31, 2018 USD ($)
REGULATORY CAPITAL MATTERS
Number of classifications \| item	5
Capital Conversion Buffer	2.50%
Republic Bancorp, Inc.
Actual Amount
Total capital to risk weighted assets	$ 825,987	$ 757,726
Common equity tier 1 capital to risk weighted assets	742,636	673,051
Tier 1 (core) capital to risk weighted assets	782,636	713,051
Tier 1 leverage capital to average assets	$ 782,636	$ 713,051
Actual Ratio
Total capital to risk weighted assets (as a percent)	17.01%	16.80%
Common equity tier 1 capital to risk weighted assets (as a percent)	15.29%	14.92%
Tier 1 (core) capital to risk weighted assets (as a percent)	16.11%	15.81%
Tier 1 leverage capital to average assets (as a percent)	13.93%	14.11%
Minimum Requirement for Capital Adequacy Purposes Amount
Total capital to risk weighted assets	$ 388,526	$ 360,911
Common equity Tier 1 capital to risk weighted assets	218,546	203,012
Tier 1 (core) capital to risk weighted assets	291,394	270,683
Tier 1 leverage capital to average assets	$ 224,799	$ 202,119
Minimum Requirement for Capital Adequacy Purposes Ratio
Total capital to risk weighted assets (as a percent)	8.00%	8.00%
Common equity tier 1 capital to risk weighted assets (as a percent)	4.50%	4.50%
Tier 1 (core) capital to risk weighted assets (as a percent)	6.00%	6.00%
Tier 1 leverage capital to average assets (as a percent)	4.00%	4.00%
Republic Bank &Trust Co
Actual Amount
Total capital to risk weighted assets	$ 723,248	$ 654,258
Common equity tier 1 capital to risk weighted assets	679,897	609,583
Tier 1 (core) capital to risk weighted assets	679,897	609,583
Tier 1 leverage capital to average assets	$ 679,897	$ 609,583
Actual Ratio
Total capital to risk weighted assets (as a percent)	14.91%	14.52%
Common equity tier 1 capital to risk weighted assets (as a percent)	14.01%	13.53%
Tier 1 (core) capital to risk weighted assets (as a percent)	14.01%	13.53%
Tier 1 leverage capital to average assets (as a percent)	12.11%	12.06%
Minimum Requirement for Capital Adequacy Purposes Amount
Total capital to risk weighted assets	$ 388,143	$ 360,359
Common equity Tier 1 capital to risk weighted assets	218,331	202,702
Tier 1 (core) capital to risk weighted assets	291,107	270,269
Tier 1 leverage capital to average assets	$ 224,515	$ 202,126
Minimum Requirement for Capital Adequacy Purposes Ratio
Total capital to risk weighted assets (as a percent)	8.00%	8.00%
Common equity tier 1 capital to risk weighted assets (as a percent)	4.50%	4.50%
Tier 1 (core) capital to risk weighted assets (as a percent)	6.00%	6.00%
Tier 1 leverage capital to average assets (as a percent)	4.00%	4.00%
Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions Amount
Total capital to risk weighted assets	$ 485,179	$ 450,449
Common equity Tier 1 capital to risk weighted assets	315,366	292,792
Tier 1 (core) capital to risk weighted assets	388,143	360,359
Tier 1 leverage capital to average assets	$ 280,644	$ 252,658
Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions Ratio
Total capital to risk weighted assets (as a percent)	10.00%	10.00%
Common equity tier 1 capital to risk weighted assets (as a percent)	6.50%	6.50%
Tier 1 (core) capital to risk weighted assets (as a percent)	8.00%	8.00%
Tier 1 leverage capital to average assets (as a percent)	5.00%	5.00%
Implementation of Basel III regulatory capital reforms and changes required by the Dodd-Frank Act
Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions Ratio
Total capital to risk weighted assets (as a percent)	10.00%
Common equity tier 1 capital to risk weighted assets (as a percent)	6.50%
Tier 1 (core) capital to risk weighted assets (as a percent)	8.00%
Tier 1 leverage capital to average assets (as a percent)	5.00%

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