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Income Taxes (Details Textual) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2016
Jun. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Income Taxes (Textual) [Abstract]          
Provision (benefit) for income taxes $ 3,694   $ (10,429) $ 71,379 $ (25,905)
Valuation allowance, evaluation period       3 years  
Non-cash charge to record valuation allowance   $ 100,600