JUNIOR SUBORDINATED DEBENTURES ISSUED TO CAPITAL TRUSTS - Carrying Values (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
SUBORDINATED NOTES
Junior subordinated debentures	$ 52,909	$ 52,849
Junior subordinated debentures
SUBORDINATED NOTES
Subordinated notes, at face value	53,714
Junior subordinated debentures	52,909	52,849
Junior subordinated debentures \| Heartland Bancorp, Inc. Capital Trust B
SUBORDINATED NOTES
Subordinated notes, at face value	10,310
Junior subordinated debentures	10,310	10,310
Junior subordinated debentures \| Heartland Bancorp, Inc. Capital Trust C
SUBORDINATED NOTES
Subordinated notes, at face value	10,310
Junior subordinated debentures	10,310	10,310
Junior subordinated debentures \| Heartland Bancorp, Inc. Capital Trust D
SUBORDINATED NOTES
Subordinated notes, at face value	5,155
Junior subordinated debentures	5,155	5,155
Junior subordinated debentures \| FFBI Capital Trust I
SUBORDINATED NOTES
Subordinated notes, at face value	7,217
Junior subordinated debentures	7,217	7,217
Junior subordinated debentures \| National Bancorp Statutory Trust I
SUBORDINATED NOTES
Subordinated notes, at face value	5,773
Junior subordinated debentures	4,985	4,919
Junior subordinated debentures \| Town and Country Statutory Trust II
SUBORDINATED NOTES
Subordinated notes, at face value	4,124
Junior subordinated debentures	4,347	4,374
Junior subordinated debentures \| Town and Country Statutory Trust III
SUBORDINATED NOTES
Subordinated notes, at face value	7,732
Junior subordinated debentures	7,601	7,590
Junior subordinated debentures \| West Plains Investors Statutory Trust I
SUBORDINATED NOTES
Subordinated notes, at face value	3,093
Junior subordinated debentures	$ 2,984	$ 2,974