Consolidated Statements of Comprehensive Income (Loss) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2014		Dec. 31, 2013		Dec. 31, 2012
Statement of Comprehensive Income [Abstract]
Net income (loss) for the year	$ 9,561		$ 26,153		$ (851)
Other comprehensive income (loss), net of tax
Currency translation adjustment	(2,627)	[1]	1,502	[1]	415	[1]
Comprehensive income (loss) for the year	6,934		27,655		(436)
Net income attributable to non-controlling interests	735		1,092		2,762
Total comprehensive income	$ 6,199		$ 26,563		$ (3,198)

[1] Total other comprehensive (loss) income is attributable to Oppenheimer Holdings Inc. No other comprehensive income (loss) is attributable to non-controlling interests.