Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Reconciliation of total provision for income taxes
Income from continuing operations before income taxes, net of amounts attributable to noncontrolling interests			$ 160,097	$ 53,651
Pre-tax income attributable to pass-through subsidiaries			(151,203)	(62,144)
Pre-tax income (loss) attributable to taxable subsidiaries			8,894	(8,493)
Federal provision at statutory tax rate (35%)			3,113	(2,972)
State and local taxes, net of federal benefit			978	(157)
Recognition of deferred revenue as a result of the CPA®:16 Merger			4,848	0
Amortization of intangible assets			0	121
Interest			1,739	0
Other			536	(1,120)
Tax provision - taxable subsidiaries			11,214	(4,128)
Deferred foreign tax benefit (b)			(6,427)	0
Current foreign taxes			4,422	1,462
Other state and local taxes			1,084	325
Income tax expense from continuing operations	$ 8,053	$ (1,134)	$ 10,293	$ (2,341)
Effective Income Tax Rate Reconciliation, Percent
Income tax rate - federal			35.00%	35.00%
Income tax rate - state and local			11.00%	1.80%
Income tax rate - deferred revenue			54.50%	0.00%
Income tax rate - amortization of intangible assets			0.00%	(1.40%)
Income tax rate - interest			19.60%	0.00%
Income tax rate - other			6.00%	13.20%
Income tax rate - total			126.10%	48.60%