SUBORDINATED DEBT AND DEBENTURES - Subordinated Debentures (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024	Mar. 31, 2018
Summary Of Information Regarding Subordinated Debentures [Abstract]
Subordinated debentures	$ 39,864	$ 39,796
Subordinated Debentures
Summary Of Information Regarding Subordinated Debentures [Abstract]
Subordinated debentures	39,864	39,796
Subordinated Debentures \| IBC Capital Finance III
Summary Of Information Regarding Subordinated Debentures [Abstract]
Subordinated debentures	12,372	12,372
Subordinated Debentures \| IBC Capital Finance IV
Summary Of Information Regarding Subordinated Debentures [Abstract]
Subordinated debentures	15,465	15,465
Subordinated Debentures \| Midwest Guaranty Trust I
Summary Of Information Regarding Subordinated Debentures [Abstract]
Subordinated debentures	7,732	7,732
Subordinated Debentures \| TCSB Statutory Trust I
Summary Of Information Regarding Subordinated Debentures [Abstract]
Subordinated debentures	5,155	5,155
Discount on TCSB Statutory Trust I	(860)	(928)	$ (1,400)
Trust preferred
Summary Of Information Regarding Subordinated Debentures [Abstract]
Trust Preferred Securities Issued	38,640	38,572
Trust preferred \| IBC Capital Finance III
Summary Of Information Regarding Subordinated Debentures [Abstract]
Trust Preferred Securities Issued	12,000	12,000
Trust preferred \| IBC Capital Finance IV
Summary Of Information Regarding Subordinated Debentures [Abstract]
Trust Preferred Securities Issued	15,000	15,000
Trust preferred \| Midwest Guaranty Trust I
Summary Of Information Regarding Subordinated Debentures [Abstract]
Trust Preferred Securities Issued	7,500	7,500
Trust preferred \| TCSB Statutory Trust I
Summary Of Information Regarding Subordinated Debentures [Abstract]
Trust Preferred Securities Issued	5,000	5,000
Discount on TCSB Statutory Trust I	(860)	(928)
Common Stock Issued
Summary Of Information Regarding Subordinated Debentures [Abstract]
Common Stock Issued	1,224	1,224
Common Stock Issued \| IBC Capital Finance III
Summary Of Information Regarding Subordinated Debentures [Abstract]
Common Stock Issued	372	372
Common Stock Issued \| IBC Capital Finance IV
Summary Of Information Regarding Subordinated Debentures [Abstract]
Common Stock Issued	465	465
Common Stock Issued \| Midwest Guaranty Trust I
Summary Of Information Regarding Subordinated Debentures [Abstract]
Common Stock Issued	232	232
Common Stock Issued \| TCSB Statutory Trust I
Summary Of Information Regarding Subordinated Debentures [Abstract]
Common Stock Issued	155	155
Discount on TCSB Statutory Trust I	$ 0	$ 0