Annual report [Section 13 and 15(d), not S-K Item 405]

INCOME TAXES (Reconciliation Between Expected and Actual Income Tax Expense and Resulting Effective Tax Rate) (Details)

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INCOME TAXES (Reconciliation Between Expected and Actual Income Tax Expense and Resulting Effective Tax Rate) (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Effective Income Tax Rate Reconciliation, Amount      
Expected federal income tax expense, Amount $ 70,725 $ 54,557 $ 50,361
Effective Income Tax Rate Reconciliation, State and Local Jurisdiction, Contribution Greater than 50 Percent, Tax Effect [Extensible Enumeration] MARYLAND   MARYLAND, NORTH CAROLINA, stpr:PA, stpr:SC
Tax credits, Amount $ (2,877) (1,475) $ (767)
Valuation allowance changes, Amount 0 0 0
Tax-exempt income, net of expense disallowance, Amount (11,518) (11,104) (11,123)
Bank owned life insurance, Amount (4,414) (3,282) (2,469)
Executive compensation, Amount 4,532 1,305 405
FDIC expense, amount 4,038 1,340 852
Other non-taxable and non-deductible items, Amount 2,520 1,362 254
Unrecognized tax benefits, Amount 1,594 0 0
Other adjustments, Amount (146) (1,486) 40
Provision for income taxes and effective income tax rate, Amount $ 63,276 $ 50,663 $ 38,083
Effective Income Tax Rate Reconciliation, Percent      
Expected federal income tax expense, Percent 21.00% 21.00% 21.00%
Tax credits, Percent (0.90%) (0.60%) (0.30%)
Valuation allowance changes, Percent 0.00% 0.00% 0.00%
Non-taxable and non-deductible items, Percent      
Tax-exempt income, net of expense disallowance, Percent (3.40%) (4.20%) (4.60%)
Bank owned life insurance, Percent (1.30%) (1.30%) (1.00%)
Executive compensation, Percent 1.30% 0.50% 0.20%
FDIC expense, Percent 1.20% 0.50% 0.30%
Other non-taxable and non-deductible items, Percent 0.70% 0.50% 0.10%
Unrecognized tax benefits, Percent 0.50% 0.00% 0.00%
Other adjustments, Percent (0.60%)
Provision for income taxes and effective income tax rate, Percent 18.80% 19.50% 15.90%
Virginia      
Effective Income Tax Rate Reconciliation, Amount      
State income tax (benefit) expense, net of federal income tax effect, Amount $ (65) $ 8,490 $ 194
Effective Income Tax Rate Reconciliation, Percent      
State income tax (benefit) expense, net of federal income tax effect, Percent   3.30% 0.10%
Other      
Effective Income Tax Rate Reconciliation, Amount      
State income tax (benefit) expense, net of federal income tax effect, Amount $ (1,113) $ 956 $ 336
Effective Income Tax Rate Reconciliation, Percent      
State income tax (benefit) expense, net of federal income tax effect, Percent (0.30%) 0.40% 0.10%