Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	[1]	Jun. 30, 2016	Jun. 30, 2015	[1]
REVENUE
Commissions	$ 92,591	$ 103,556		$ 196,424	$ 213,251
Advisory fees	66,104	72,243		132,130	143,209
Investment banking	18,881	29,020		31,264	56,325
Interest	12,007	11,313		25,049	22,016
Principal transactions, net	7,577	3,541		14,195	12,038
Other	14,914	8,286		27,968	18,295
Total revenue	212,074	227,959		427,030	465,134
EXPENSES
Compensation and related expenses	141,721	153,805		290,216	314,629
Communications and technology	17,638	16,307		35,318	33,379
Occupancy and equipment costs	14,984	15,911		29,887	31,612
Clearing and exchange fees	6,199	6,231		13,120	12,633
Interest	4,972	4,105		9,839	7,875
Other	31,806	32,701		61,236	60,293
Total expenses	217,320	229,060		439,616	460,421
Income (loss) before income taxes from continuing operations	(5,246)	(1,101)		(12,586)	4,713
Income taxes	(2,627)	400		(6,439)	2,555
Net income (loss) from continuing operations	(2,619)	(1,501)		(6,147)	2,158
Income from discontinued operations	15,366	3,731		14,709	7,768
Income taxes	6,036	1,585		5,760	3,160
Net income from discontinued operations	9,330	2,146		8,949	4,608
Net income	6,711	645		2,802	6,766
Less net income attributable to noncontrolling interest, net of tax	1,523	350		1,461	752
Net income attributable to Oppenheimer Holdings Inc.	$ 5,188	$ 295		$ 1,341	$ 6,014
Basic earnings (loss) per share attributable to Oppenheimer Holdings Inc.
Continuing operations, basic (in dollars per share)	$ (0.20)	$ (0.11)		$ (0.46)	$ 0.16
Discontinued operations, basic (in dollars per share)	0.59	0.13		0.56	0.28
Basic (in dollars per share)	0.39	0.02		0.10	0.44
Diluted earnings (loss) per share attributable to Oppenheimer Holdings Inc.
Continuing operations, diluted (in dollars per share)	(0.20)	(0.11)		(0.46)	0.15
Discontinued operations, diluted (in dollars per share)	0.59	0.13		0.56	0.27
Diluted (in dollars per share)	0.39	0.02		0.10	0.42
Dividends declared per share (in dollars per share)	$ 0.11	$ 0.11		$ 0.22	$ 0.22
Weighted average number of common shares outstanding
Basic (in shares)	13,367,248	13,745,957		13,373,537	13,725,208
Diluted (in shares)	13,367,248	13,745,957		13,373,537	14,342,474

[1] Amounts have been recast to reflect discontinued operations. See Note 3 for details.