STOCKHOLDERS' EQUITY AND REGULATORY CAPITAL MATTERS - REGULATORY (Details) $ in Thousands	Dec. 31, 2023 USD ($) item	Dec. 31, 2022 USD ($)
REGULATORY CAPITAL MATTERS
Number of classifications \| item	5
Republic Bancorp, Inc.
Actual Amount
Total capital to risk weighted assets	$ 968,844	$ 941,865
Common equity tier 1 capital to risk weighted assets	893,658	877,735
Tier 1 (core) capital to risk weighted assets	893,658	877,735
Tier 1 leverage capital to average assets	$ 893,658	$ 877,735
Actual Ratio
Total capital to risk weighted assets ratio	0.1610	0.1792
Common equity tier 1 capital to risk weighted assets ratio	0.1485	0.1670
Tier 1 (core) capital to risk weighted assets ratio	0.1485	0.1670
Tier 1 leverage capital to average assets ratio	0.1389	0.1481
Minimum Requirement for Capital Adequacy Purposes Amount
Total capital to risk weighted assets	$ 481,522	$ 420,514
Common equity Tier 1 capital to risk weighted assets	270,856	236,539
Tier 1 (core) capital to risk weighted assets	361,141	315,386
Tier 1 leverage capital to average assets	$ 257,442	$ 237,106
Minimum Requirement for Capital Adequacy Purposes Ratio
Total capital to risk weighted assets ratio	0.0800	0.0800
Common equity tier 1 capital to risk weighted assets ratio	0.0450	0.0450
Tier 1 (core) capital to risk weighted assets ratio	0.0600	0.0600
Tier 1 leverage capital to average assets ratio	0.0400	0.0400
Republic Bank & Trust Co.
Actual Amount
Total capital to risk weighted assets	$ 931,923	$ 904,592
Common equity tier 1 capital to risk weighted assets	856,744	840,462
Tier 1 (core) capital to risk weighted assets	856,744	840,462
Tier 1 leverage capital to average assets	$ 856,744	$ 840,462
Actual Ratio
Total capital to risk weighted assets ratio	0.1550	0.1723
Common equity tier 1 capital to risk weighted assets ratio	0.1425	0.1601
Tier 1 (core) capital to risk weighted assets ratio	0.1425	0.1601
Tier 1 leverage capital to average assets ratio	0.1325	0.1409
Minimum Requirement for Capital Adequacy Purposes Amount
Total capital to risk weighted assets	$ 481,147	$ 420,040
Common equity Tier 1 capital to risk weighted assets	270,645	236,273
Tier 1 (core) capital to risk weighted assets	360,860	315,030
Tier 1 leverage capital to average assets	$ 258,697	$ 238,578
Minimum Requirement for Capital Adequacy Purposes Ratio
Total capital to risk weighted assets ratio	0.0800	0.0800
Common equity tier 1 capital to risk weighted assets ratio	0.0450	0.0450
Tier 1 (core) capital to risk weighted assets ratio	0.0600	0.0600
Tier 1 leverage capital to average assets ratio	0.0400	0.0400
Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions Amount
Total capital to risk weighted assets	$ 601,433	$ 525,050
Common equity Tier 1 capital to risk weighted assets	390,932	341,283
Tier 1 (core) capital to risk weighted assets	481,147	420,040
Tier 1 leverage capital to average assets	$ 323,371	$ 298,222
Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions Ratio
Total capital to risk weighted assets ratio	0.1000	0.1000
Common equity tier 1 capital to risk weighted assets ratio	0.0650	0.0650
Tier 1 (core) capital to risk weighted assets ratio	0.0800	0.0800
Tier 1 leverage capital to average assets ratio	0.0500	0.0500
Implementation of Basel III regulatory capital reforms and changes required by the Dodd-Frank Act
REGULATORY CAPITAL MATTERS
Capital Conversion Buffer	0.025
Minimum Requirement to be Well Capitalized Under Prompt Corrective Action Provisions Ratio
Total capital to risk weighted assets ratio	0.100
Common equity tier 1 capital to risk weighted assets ratio	0.065
Tier 1 (core) capital to risk weighted assets ratio	0.080
Tier 1 leverage capital to average assets ratio	0.050

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