Income Taxes (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Reconciliation of total provision for income taxes
Income from continuing operations before income taxes, net of amounts attributable to noncontrolling interests	$ 108,978	$ 15,650
Pre-tax income attributable to pass-through subsidiaries	(105,310)	(24,143)
Pre-tax income (loss) attributable to taxable subsidiaries	3,668	(8,493)
Federal provision at statutory tax rate (35%)	1,284	(2,972)
State and local taxes, net of federal benefit	402	(157)
Recognition of deferred revenue as a result of the CPA®:16 Merger	3,827	0
Amortization of intangible assets	161	121
Other	40	13
Tax provision - taxable subsidiaries	5,714	(2,995)
Deferred foreign taxes	(5,532)	0
Current foreign taxes	373	1,462
Other state and local taxes	1,666	325
Income tax expense from continuing operations	$ 2,221	$ (1,208)
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	104.30%	0.00%
Income tax rate - amortization of intangible assets	4.40%	(1.40%)
Income tax rate - other	1.10%	(0.20%)
Income tax rate - total	155.80%	35.20%