Loans And Allowance For Credit Losses (Summary Of Loans, Net) (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Jun. 30, 2025	Dec. 31, 2024	Sep. 30, 2024	Jun. 30, 2024	Dec. 31, 2023
Loans and Leases Receivable Disclosure [Line Items]
Total loans	$ 659,586		$ 643,596
Less allowance for credit losses	6,298	$ 6,308	7,044	$ 7,078	$ 6,951	$ 7,412
Net loans	653,288		636,552	627,112
Net deferred costs	598		817
Commercial [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans	61,987		66,418
Less allowance for credit losses	655	747	686	489	606	514
Commercial Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Less allowance for credit losses	3,176	3,047	3,719	3,915	3,748	3,985
Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Less allowance for credit losses	837	799	842	898	897	1,093
Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Less allowance for credit losses	1,630	$ 1,715	1,797	$ 1,776	$ 1,700	$ 1,820
Commercial Mortgages-Owner Occupied [Member] \| Commercial Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans	149,824		140,443
Commercial Mortgages-Non-Owner Occupied [Member] \| Commercial Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans	215,798		195,089
Commercial Construction/Land [Member] \| Commercial Real Estate [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans	14,364		23,883
Consumer Open-End [Member] \| Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans	59,675		50,041
Consumer Closed-End [Member] \| Consumer [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans	25,753		28,269
Residential Mortgages [Member] \| Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans	105,666		113,303
Residential Consumer Construction/Land [Member] \| Residential [Member]
Loans and Leases Receivable Disclosure [Line Items]
Total loans	$ 26,519		$ 26,150

BANK OF THE JAMES FINANCIAL GROUP INC 10-Q