XML 113 R95.htm IDEA: XBRL DOCUMENT v2.4.0.8

Employee Compensation Plans - Stock Appreciation Rights (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of OARs outstanding	1,818,540
Total weighted average strike price	$ 20.30
Total weighted average remaining contractual life	2 years 3 months 18 days
Total weighted average fair value per share	$ 7.39
January 12, 2009 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of OARs outstanding	324,200
Strike price	$ 12.74
Remaining contractual life	11 days
Fair value per share	$ 12.04
January 19, 2010 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of OARs outstanding	267,680
Strike price	$ 30.68
Remaining contractual life	1 year
Fair value per share	$ 1.46
January 13, 2011 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of OARs outstanding	366,050
Strike price	$ 26.35
Remaining contractual life	2 years
Fair value per share	$ 3.02
January 19, 2012 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of OARs outstanding	406,040
Strike price	$ 18.94
Remaining contractual life	3 years
Fair value per share	$ 8.09
January Fourteen Two Thousand Thirteen [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total Number of OARs outstanding	454,570
Strike price	$ 15.94
Remaining contractual life	4 years
Fair value per share	$ 10.45

X

- Definition

The fair value per share of each stock appreciation rights award outstanding by grant date as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	opy_ShareBasedCompensationArrangementByCashPaymentAwardStockAppreciationRightsFairValuePerShare
Namespace Prefix:	opy_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The number of each stock appreciation rights award outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	opy_ShareBasedCompensationArrangementByCashPaymentAwardStockAppreciationRightsOutstandingNumber
Namespace Prefix:	opy_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The remaining contractual term of the stock appreciation rights outstanding by grant date as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	opy_ShareBasedCompensationArrangementByCashPaymentAwardStockAppreciationRightsRemainingContractualLife
Namespace Prefix:	opy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The strike price of each stock appreciation rights award outstanding.

+ References

No definition available.

+ Details

Name:	opy_ShareBasedCompensationArrangementByCashPaymentAwardStockAppreciationRightsStrikePrice
Namespace Prefix:	opy_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The weighted average fair value per share of the total stock appreciation rights outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	opy_ShareBasedCompensationArrangementByCashPaymentAwardStockAppreciationRightsWeightedAverageFairValuePerShare
Namespace Prefix:	opy_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Definition

The weighted average remaining contractual term of the total stock appreciation rights outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	opy_ShareBasedCompensationArrangementByCashPaymentAwardStockAppreciationRightsWeightedAverageRemainingContractualLife
Namespace Prefix:	opy_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The weighted average strike price of the total stock appreciation rights outstanding as of the balance sheet date.

+ References

No definition available.

+ Details

Name:	opy_ShareBasedCompensationArrangementByCashPaymentAwardStockAppreciationRightsWeightedAverageStrikePrice
Namespace Prefix:	opy_
Data Type:	num:perShareItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration