Fair Value Measurements - Assets Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Financial assets:
Fair Value	$ 99,552	$ 83,755
Loan servicing rights	6,320	6,016
Derivatives		68
Financial liabilities:
Derivatives	1,053	927
U.S. Treasury securities
Financial assets:
Fair Value	4,495	20,000
U.S. GSE residential mortgage-backed securities
Financial assets:
Fair Value	18,143	10,645
U.S. GSE residential collateralized mortgage obligations
Financial assets:
Fair Value	11,757
Corporate bonds
Financial assets:
Fair Value	29,961	19,130
Recurring \| Carrying Amount
Financial assets:
Total	105,872	89,839
Financial liabilities:
Derivatives	1,053	927
Recurring \| Carrying Amount \| U.S. Treasury securities
Financial assets:
Fair Value	4,495	20,000
Recurring \| Carrying Amount \| U.S. GSE residential mortgage-backed securities
Financial assets:
Fair Value	18,143	10,645
Recurring \| Carrying Amount \| U.S. GSE residential collateralized mortgage obligations
Financial assets:
Fair Value	11,757
Recurring \| Carrying Amount \| U.S. GSE commercial mortgage-backed securities
Financial assets:
Fair Value	2,532	1,503
Recurring \| Carrying Amount \| Collateralized loan obligations
Financial assets:
Fair Value	32,664	32,477
Recurring \| Carrying Amount \| Corporate bonds
Financial assets:
Fair Value	29,961	19,130
Recurring \| Carrying Amount \| Loan servicing rights
Financial assets:
Loan servicing rights	6,320	6,016
Derivatives		68
Recurring \| As Adjusted \| Quoted Prices In Active Markets for Identical Assets (Level 1)
Financial assets:
Total	0	0
Financial liabilities:
Derivatives	0	0
Recurring \| As Adjusted \| Quoted Prices In Active Markets for Identical Assets (Level 1) \| U.S. Treasury securities
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Quoted Prices In Active Markets for Identical Assets (Level 1) \| U.S. GSE residential mortgage-backed securities
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Quoted Prices In Active Markets for Identical Assets (Level 1) \| U.S. GSE residential collateralized mortgage obligations
Financial assets:
Fair Value	0
Recurring \| As Adjusted \| Quoted Prices In Active Markets for Identical Assets (Level 1) \| U.S. GSE commercial mortgage-backed securities
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Quoted Prices In Active Markets for Identical Assets (Level 1) \| Collateralized loan obligations
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Quoted Prices In Active Markets for Identical Assets (Level 1) \| Corporate bonds
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Quoted Prices In Active Markets for Identical Assets (Level 1) \| Loan servicing rights
Financial assets:
Loan servicing rights	0	0
Derivatives		0
Recurring \| As Adjusted \| Significant Other Observable Inputs (Level 2)
Financial assets:
Total	99,552	83,823
Financial liabilities:
Derivatives	1,053	927
Recurring \| As Adjusted \| Significant Other Observable Inputs (Level 2) \| U.S. Treasury securities
Financial assets:
Fair Value	4,495	20,000
Recurring \| As Adjusted \| Significant Other Observable Inputs (Level 2) \| U.S. GSE residential mortgage-backed securities
Financial assets:
Fair Value	18,143	10,645
Recurring \| As Adjusted \| Significant Other Observable Inputs (Level 2) \| U.S. GSE residential collateralized mortgage obligations
Financial assets:
Fair Value	11,757
Recurring \| As Adjusted \| Significant Other Observable Inputs (Level 2) \| U.S. GSE commercial mortgage-backed securities
Financial assets:
Fair Value	2,532	1,503
Recurring \| As Adjusted \| Significant Other Observable Inputs (Level 2) \| Collateralized loan obligations
Financial assets:
Fair Value	32,664	32,477
Recurring \| As Adjusted \| Significant Other Observable Inputs (Level 2) \| Corporate bonds
Financial assets:
Fair Value	29,961	19,130
Recurring \| As Adjusted \| Significant Other Observable Inputs (Level 2) \| Loan servicing rights
Financial assets:
Loan servicing rights	0	0
Derivatives		68
Recurring \| As Adjusted \| Significant Unobservable Inputs (Level 3)
Financial assets:
Total	6,320	6,016
Financial liabilities:
Derivatives	0	0
Recurring \| As Adjusted \| Significant Unobservable Inputs (Level 3) \| U.S. Treasury securities
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Significant Unobservable Inputs (Level 3) \| U.S. GSE residential mortgage-backed securities
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Significant Unobservable Inputs (Level 3) \| U.S. GSE residential collateralized mortgage obligations
Financial assets:
Fair Value	0
Recurring \| As Adjusted \| Significant Unobservable Inputs (Level 3) \| U.S. GSE commercial mortgage-backed securities
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Significant Unobservable Inputs (Level 3) \| Collateralized loan obligations
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Significant Unobservable Inputs (Level 3) \| Corporate bonds
Financial assets:
Fair Value	0	0
Recurring \| As Adjusted \| Significant Unobservable Inputs (Level 3) \| Loan servicing rights
Financial assets:
Loan servicing rights	$ 6,320	6,016
Derivatives		$ 0

Hanover Bancorp, Inc. /MD 10-K