XML 51 R41.htm IDEA: XBRL DOCUMENT
v3.26.1

Financial Instruments - Credit Losses - Schedule of Activity in Allowance for Uncollectibles of Defaulted Notes (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2026 | Mar. 31, 2025
Financing Receivable, Allowance for Credit Loss [Roll Forward] |  |
Beginning balance | $ 2,117 | $ 2,814
Additions | 435 | 168
Ending balance | $ 2,552 | $ 2,982

X
- Definition Financing Receivable, Excluding Accrued Interest, Additions + References No definition available. + Details
Name: | opy_FinancingReceivableExcludingAccruedInterestAdditions
Namespace Prefix: | opy_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount excluding accrued interest, of allowance for credit loss on financing receivable. Excludes net investment in lease. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 45 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479344/326-20-45-1 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossExcludingAccruedInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesRollForward
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration