Fair Value of Assets and Liabilities - Fair Value Measurements on a Non-Recurring Basis (Details) - Nonrecurring Measurements - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Assets with a recorded change from re-measuring at fair value on a non-recurring basis
Collateral-dependent impaired loans, net of ACL	$ 1,887	$ 2,052
Total assets measured at fair value on a recurring basis	1,887	2,052
Level 1
Assets with a recorded change from re-measuring at fair value on a non-recurring basis
Collateral-dependent impaired loans, net of ACL	0	0
Total assets measured at fair value on a recurring basis	0	0
Level 2
Assets with a recorded change from re-measuring at fair value on a non-recurring basis
Collateral-dependent impaired loans, net of ACL	0	0
Total assets measured at fair value on a recurring basis	0	0
Level 3
Assets with a recorded change from re-measuring at fair value on a non-recurring basis
Collateral-dependent impaired loans, net of ACL	1,887	2,052
Total assets measured at fair value on a recurring basis	$ 1,887	$ 2,052

GLACIER BANCORP, INC. 10-K