Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
REVENUE
Commissions	$ 116,062	$ 124,440	$ 238,200	$ 244,020
Advisory fees	70,430	60,580	138,635	117,300
Investment banking	26,799	22,567	60,323	41,015
Interest	12,548	13,106	24,938	25,477
Principal transactions, net	11,794	7,532	20,611	23,249
Other	12,056	15,605	22,150	31,915
Total revenue	249,689	243,830	504,857	482,976
EXPENSES
Compensation and related expenses	159,851	160,006	331,801	319,215
Communications and technology	17,536	16,018	34,270	31,882
Occupancy and equipment costs	15,907	17,141	31,304	34,706
Clearing and exchange fees	6,024	6,293	11,916	12,335
Interest	4,412	7,143	9,576	14,005
Other	45,823	31,555	80,745	58,446
Total expenses	249,553	238,156	499,612	470,589
Income before income taxes	136	5,674	5,245	12,387
Income tax provision	1,389	2,608	3,078	5,428
Net income (loss) for the period	(1,253)	3,066	2,167	6,959
Less net income attributable to non-controlling interest, net of tax	301	218	497	448
Net income (loss) attributable to Oppenheimer Holdings Inc.	$ (1,554)	$ 2,848	$ 1,670	$ 6,511
Earnings (loss) per share attributable to Oppenheimer Holdings Inc.
Basic (in dollars per share)	$ (0.11)	$ 0.21	$ 0.12	$ 0.48
Diluted (in dollars per share)	$ (0.11)	$ 0.20	$ 0.12	$ 0.46
Dividends declared per share (in dollars per share)	$ 0.11	$ 0.11	$ 0.22	$ 0.22
Weighted average shares
Basic (in shares)	13,618,174	13,607,348	13,577,714	13,607,671
Diluted (in shares)	13,618,174	14,068,368	14,184,330	14,068,779