XML 53 R39.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Bank Call Loans (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2016
Bank Call Loans [Abstract] |
Summary of Bank Call Loans | Bank call loans, primarily payable on demand, bear interest at various rates but not exceeding the broker call rate, which was 2.50% at December 31, 2016 (2.25% at December 31, 2015). Details of the bank call loans are as follows:
(Expressed in thousands, except percentages) |  |  |
| 2016 |  | 2015
Year-end balance | $ | 145,800 |  |  | $ | 100,200 |
Weighted interest rate (at end of year) | 1.77 | % |  | 1.56 | %
Maximum balance (at any month-end) | 151,900 |  |  | 189,000 |
Average amount outstanding (during the year) | 106,455 |  |  | 116,267 |
Average interest rate (during the year) | 1.52 | % |  | 1.28 | %

X
- Definition Bank Call Loans [Abstract] + References No definition available. + Details
Name: | opy_BankCallLoansAbstract
Namespace Prefix: | opy_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Schedule of bank call loans. + References No definition available. + Details
Name: | opy_ScheduleOfBankCallLoansTableTextBlock
Namespace Prefix: | opy_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration