Schedule II - Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	$ 130,232	$ 127,946	$ 92,991	$ 23,739
Charged to Cost and Expenses	3,699	35,050	69,382
Deduction/ (Addition)	1,413	95	(130)
Balance at End of Period	130,232	127,946	92,991	23,739
Allowance for Doubtful Accounts [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	0	1,413	1,508	1,217
Charged to Cost and Expenses	0	0	421
Deduction/ (Addition)	1,413	95	(130)
Balance at End of Period	0	1,413	1,508	1,217
Valuation Allowance of Deferred Tax Assets [Member]
Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at Beginning of Period	130,232	126,533	91,483	22,522
Charged to Cost and Expenses	3,699	35,050	68,961
Deduction/ (Addition)	0	0	0
Balance at End of Period	$ 130,232	$ 126,533	$ 91,483	$ 22,522