Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Income Tax Disclosure [Abstract]
Provision for (benefit from) income taxes	$ (23,428,000)	$ 11,854,000	$ (1,333,000)	$ 1,095,000
Effective income tax rate	81.90%	(39.70%)	(11.60%)	14.60%
Other tax expense (benefit)			$ 600,000