Income Taxes (Details) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013
Income Tax Disclosure [Abstract]
Benefit from income taxes	$ 693,000	$ (1,799,000)	$ 1,496,000	$ (132,112,000)
Unrecognized tax benefits	$ 3,000,000		$ 3,000,000		$ 2,000,000