Intangible Asset and Goodwill (Details 4) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Goodwill and Intangible Assets Disclosure [Abstract]
Total Proceeds From Sale Of Intangible Assets	$ 2,500,000
Estimated future amortization expense of intangible assets
2014 (remaining 9 months)	19,846,000
2015	25,098,000
2016	24,335,000
2017	23,734,000
2018	10,827,000
Thereafter	5,420,000
Net Carrying Amount	$ 109,260,000	$ 117,172,000