Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Line Items]
Valuation allowance of deferred tax assets	$ 0
Qualifying and non-qualifying tax bad debt reserves	45,900,000	$ 45,900,000
Provision for income taxes	0
Related amount of unrecognized deferred tax liability	10,500,000	10,500,000
Federal and state income taxes applicable to securities transactions	200,000	(400,000)	$ 200,000
Unrecognized tax benefits and interest	58,000	$ 158,000	$ 226,000	$ 324,000
Unrecognized tax benefits that would affect the effective tax rate	0
YCB and OLBK [Member]
Income Tax Disclosure [Line Items]
Federal deferred tax assets net operating loss carryforwards	$ 19,600,000
YCB and OLBK [Member] | Maryland [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards expiration date	2030
State and local deferred tax assets net operating loss carryforwards	$ 4,000,000
YCB and OLBK [Member] | Kentucky
Income Tax Disclosure [Line Items]
Net operating loss carryforwards expiration date	2032
State and local deferred tax assets net operating loss carryforwards	$ 13,600,000
Earliest Tax Year [Member]
Income Tax Disclosure [Line Items]
Earliest year for tax examination	2020
Earliest Tax Year [Member] | YCB and OLBK [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards expiration date	2034
Latest Tax Year [Member] | YCB and OLBK [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards expiration date	2037