Income Taxes (Tables)

3 Months Ended

Mar. 31, 2016

Income Tax Disclosure [Abstract]

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]

The following is a reconciliation of the U.S. statutory federal income tax rate to the Company’s effective tax rate:

	Three Months Ended March 31,
	2016			2015
Income tax (benefit) expense at the U.S. federal statutory income tax rate		34.00	%		35.00	%
State and local income tax, net of federal benefit		4.49	%		1.38	%
Foreign tax		-0.08	%		5.33	%
Effect of permanent differences		-0.03	%		0.00	%
Income attributable to non-controlling interests in Consolidated Funds not subject to tax		3.90	%		0.00	%
Income attributable to non-controlling interests in ZGP not subject to tax		-12.22	%		-26.75	%
Valuation allowance		-30.15	%		0.00	%
Total		-0.09	%		14.96	%

Summary of Operating Loss Carryforwards [Table Text Block]

As of March 31, 2016, the Company has estimated federal and state income tax net operating loss carryforwards of $12,706,000 which will expire as follows:

2032	$	1,000
2033		83,000
2034		122,000
2035		7,388,000
2036		5,112,000
Total	$	12,706,000