Amount before allocation of valuation allowances of deferred tax asset attributable to deductible domestic operating loss carryforwards. Excludes state and local operating loss carryforwards.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 8
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32632-109319

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 10
-Section 50
-Paragraph 6
-URI http://asc.fasb.org/extlink&oid=121826272&loc=d3e32621-109319

Income Taxes - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Line Items]
Federal statutory tax rate	21.00%	21.00%	21.00%
Provision for income taxes	$ 59,589,000	$ 23,035,000	$ 34,341,000
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	10,800,000	10,800,000
Federal and state income taxes applicable to securities transactions	200,000	1,000,000.0	1,000,000.0
Unrecognized tax benefits and interest	226,000	324,000	$ 434,000	$ 465,000
Unrecognized tax benefits that would affect the effective tax rate	200,000
YCB and OLBK [Member]
Income Tax Disclosure [Line Items]
Federal deferred tax assets net operating loss carryforwards	$ 23,500,000
YCB and OLBK [Member] \| Maryland [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards expiration date	2035
State and local deferred tax assets net operating loss carryforwards	$ 18,000,000.0
YCB and OLBK [Member] \| Kentucky
Income Tax Disclosure [Line Items]
Net operating loss carryforwards expiration date	2025
State and local deferred tax assets net operating loss carryforwards	$ 36,800,000
Earliest Tax Year [Member]
Income Tax Disclosure [Line Items]
Earliest year for tax examination	2018
Earliest Tax Year [Member] \| YCB and OLBK [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards expiration date	2033
Latest Tax Year [Member] \| YCB and OLBK [Member]
Income Tax Disclosure [Line Items]
Net operating loss carryforwards expiration date	2036
CARES Act [Member]
Income Tax Disclosure [Line Items]
Federal statutory tax rate				21.00%
Provision for income taxes		$ (200,000)
Maximum [Member] \| CARES Act [Member]
Income Tax Disclosure [Line Items]
Net operating loss period	5 years