v3.26.1
Condensed Financial Information (Parent Company Only) - Condensed Statements of Cash Flows (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Cash flows from operating activities:    
Net (loss) income $ (3,289) $ 11,484
Adjustments to reconcile net (loss) income to net cash used by operating activities:    
Increase in income tax receivable (1,819)  
Amortization of subordinated debt issuance costs 136 137
ESOP expense 1,076  
Issuance of common shares donated to the Avidia Bank Charitable Foundation [1] 9,000  
Other, net 902 7,828
Net cash provided by operating activities 28,371 23,222
Securities available for sale    
Maturities, principal payments, calls and sales 61,622 92,483
Net cash used by investing activities (111,578) (71,094)
Cash flows from financing activities:    
Net proceeds from stock offering and issuance of common shares 185,827 0
Purchase of common shares by the ESOP (16,061) 0
Net cash provided by financing activities 166,217 39,973
Net change in cash and cash equivalents 83,010 (7,899)
Cash and due from banks at beginning of year 62,444 70,343
Cash and due from banks at end of year 145,454 62,444
Parent Company    
Cash flows from operating activities:    
Net (loss) income (3,289) 11,484
Adjustments to reconcile net (loss) income to net cash used by operating activities:    
Equity in undistributed net income of subsidiary (4,957) (11,560)
Increase in income tax receivable (3,132) 297
Amortization of subordinated debt issuance costs 136 137
ESOP expense 1,076  
Issuance of common shares donated to the Avidia Bank Charitable Foundation 9,000  
Other, net (709) (437)
Net cash provided by operating activities (1,875) (79)
Securities available for sale    
Maturities, principal payments, calls and sales 209 3,300
Capital contribution to Avidia Bank (95,881)  
Net cash used by investing activities (95,672) 3,300
Cash flows from financing activities:    
Net proceeds from stock offering and issuance of common shares 185,827  
Purchase of common shares by the ESOP (16,061)  
Net cash provided by financing activities 169,766  
Net change in cash and cash equivalents 72,219 3,221
Cash and due from banks at beginning of year 3,751 530
Cash and due from banks at end of year $ 75,970 $ 3,751
[1] Represents a non-cash common stock donation of 900 thousand shares at a fair value of $9.0 million to the Avidia Bank Charitable Foundation. The donation is included in charitable contribution expense as a non-interest expense in the consolidated statements of operations for the year ended December 31, 2025.