Summary of Significant Accounting Policies (Details) (USD $)	3 Months Ended		9 Months Ended			12 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013 Minimum [Member]	Dec. 31, 2013 Minimum [Member]	Sep. 30, 2013 Maximum [Member]	Dec. 31, 2013 Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Vesting period of equity awards					2 years		4 years
Useful life of patents and patent rights						1 year		8 years
Cash Paid For Foreign Income Taxes	$ 875,000	$ 0	$ 4,605,000	$ 11,890,000
Effective tax rate			52.00%	25.00%
Excess tax benefits from stock-based compensation			(358,000)	7,554,000
Business acquisition deferred tax asset		1,900,000		1,900,000
Income tax benefit from release of valuation allowance			$ 0	$ 10,237,000