Income Taxes (Details Textual) - USD ($)	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Tax [Line Items]
Deferred Tax Assets, Operating Loss Carryforwards, Subject to Expiration	$ 12,706,000
Current Foreign Tax Expense (Benefit)	5,000
Current Income Tax Expense (Benefit), Total		$ (902,000)
Other Noncash Income Tax Expense	1,928,000
Before Acquisition of ZGP [Member]
Income Tax [Line Items]
Deferred Tax Assets, Net	6,229,000	$ 569,000
Deferred Tax Assets, Operating Loss Carryforwards, Total	$ 767,000