Income Taxes (Details) - USD ($)	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Operating Loss Carryforwards [Line Items]
Effective income tax rates	1.80%	(0.80%)
Income tax expense (benefit)	$ (418,000)	$ 293,000
Unrecognized tax benefits	1,300,000
United States Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net deferred tax assets	$ 0