Condensed Consolidated Statements of Operations (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
REVENUE
Commissions	$ 110,862	$ 120,252	$ 349,062	$ 364,272
Advisory fees	70,957	60,117	209,592	177,417
Investment banking	33,841	21,362	94,164	62,377
Interest	12,449	14,439	37,387	39,916
Principal transactions, net	4,272	10,347	24,883	33,596
Other	12,298	16,859	34,448	48,774
Total revenue	244,679	243,376	749,536	726,352
EXPENSES
Compensation and related expenses	161,334	161,081	493,135	480,296
Communications and technology	15,991	16,999	50,261	48,881
Occupancy and equipment costs	15,801	16,405	47,105	51,111
Clearing and exchange fees	5,969	6,099	17,885	18,434
Interest	4,127	6,164	13,703	20,169
Other	30,561	28,465	111,306	86,911
Total expenses	233,783	235,213	733,395	705,802
Income before income taxes	10,896	8,163	16,141	20,550
Income tax provision	6,271	2,655	9,349	8,083
Net income for the period	4,625	5,508	6,792	12,467
Less net income attributable to non-controlling interest, net of tax	155	271	652	719
Net income attributable to Oppenheimer Holdings Inc.	$ 4,470	$ 5,237	$ 6,140	$ 11,748
Earnings per share attributable to Oppenheimer Holdings Inc.
Basic (in dollars per share)	$ 0.33	$ 0.38	$ 0.45	$ 0.86
Diluted (in dollars per share)	$ 0.31	$ 0.37	$ 0.43	$ 0.83
Dividends declared per share (in dollars per share)	$ 0.11	$ 0.11	$ 0.33	$ 0.33
Weighted average shares
Basic (in shares)	13,630,368	13,604,276	13,595,458	13,606,527
Diluted (in shares)	14,297,442	14,171,802	14,217,247	14,110,131