Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Operating Loss Carryforwards [Line Items]
Effective income tax rates	0.90%	20.80%	85.50%	7.00%
Income tax expense	$ 532	$ 653	$ 1,515	$ 5,916
Unrecognized tax benefits	2,000		2,000
United States Tax Authority [Member]
Operating Loss Carryforwards [Line Items]
Net deferred tax asset	$ 2,700		$ 2,700