Notes Payable, Long Term Debt and Other Obligations Non Cash Interest Expense (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)	$ 6,355	$ 4,437	$ 5,390
Fair Value Of Derivatives [Roll Forward]
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Beginning balance	141,492	153,016	77,245
Decrease In Derivative Due To Conversion Of Debt	(8)
Unrealized Gain (Loss) on Derivatives	(7,984)	(11,524)	35,925
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Ending Balance	133,500	141,492	153,016
Unamortized Debt Discount [Roll Forward]
Amortization Of beneficial conversion feature	(4,086)	(2,530)	(2,869)
Debt Instrument, Unamortized Discount Ending Balance	176,279
Convertible Debt [Member]
Unamortized Debt Discount [Roll Forward]
Debt Instrument, Unamortized Discount Beginning Balance	186,126	193,093	123,558
Issuance of convertible notes - embedded derivative			65,882
Increase of convertible notes - beneficial conversion feature			46,200
Conversion of $11,000 of 3.875% Variable Interest Senior Convertible Debentures due June 15, 2011	3
Amortization of embedded derivatives	(6,355)	(4,437)	(5,390)
Amortization Of beneficial conversion feature	(4,086)	(2,530)	(2,869)
Debt Instrument, Unamortized Discount Ending Balance	175,688	186,126	193,093
Convertible Debt [Member] | Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member]
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)	4,745	3,113	1,210
Convertible Debt [Member] | Variable Interest 6.75% Senior Convertible Debentures [Member]
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)	1,415	749	331
Convertible Debt [Member] | Variable Interest 3.875% Senior Convertible Debentures [Member]
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)	195	575	455
Convertible Debt [Member] | Five Percent Variable Interest Senior Convertible Notes due November 15, 2011 [Member]
Debt Instrument [Line Items]
Amortization of Debt Discount (Premium)	0	0	3,394
Vector [Member] | Convertible Debt [Member] | Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member]
Unamortized Debt Discount [Roll Forward]
Debt Instrument, Unamortized Discount Ending Balance	57,036	64,713
Vector [Member] | Convertible Debt [Member] | Variable Interest 3.875% Senior Convertible Debentures [Member]
Unamortized Debt Discount [Roll Forward]
Debt Instrument, Unamortized Discount Ending Balance	82,948	83,060
Interest Rate Risk [Member]
Fair Value Of Derivatives [Roll Forward]
Unrealized Gain (Loss) on Derivatives	(7,984)	(11,524)	35,925
Interest Rate Risk [Member] | Variable Interest 6.75% Senior Convertible Debentures [Member]
Fair Value Of Derivatives [Roll Forward]
Unrealized Gain (Loss) on Derivatives	(3,290)	(3,671)	2,323
Interest Rate Risk [Member] | Variable Interest 3.875% Senior Convertible Debentures [Member]
Fair Value Of Derivatives [Roll Forward]
Unrealized Gain (Loss) on Derivatives	1,544	1,375	29,745
Interest Rate Risk [Member] | Convertible Debt [Member] | Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member]
Fair Value Of Derivatives [Roll Forward]
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Beginning balance	38,324	47,552	0
Increase Decrease In Derivative Liability From Issuance Retirement Of Derivatives			44,315
Decrease In Derivative Due To Conversion Of Debt	0
Unrealized Gain (Loss) on Derivatives	(6,238)	(9,228)	3,237
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Ending Balance	32,086	38,324	47,552
Unamortized Debt Discount [Roll Forward]
Debt Instrument, Unamortized Discount Beginning Balance	64,713	69,749	0
Issuance of convertible notes - embedded derivative			44,315
Increase of convertible notes - beneficial conversion feature			27,392
Conversion of $11,000 of 3.875% Variable Interest Senior Convertible Debentures due June 15, 2011	0
Amortization of embedded derivatives	(4,745)	(3,113)	(1,210)
Amortization Of beneficial conversion feature	(2,932)	(1,923)	(748)
Debt Instrument, Unamortized Discount Ending Balance	57,036	64,713	69,749
Interest Rate Risk [Member] | Convertible Debt [Member] | Variable Interest 6.75% Senior Convertible Debentures [Member]
Fair Value Of Derivatives [Roll Forward]
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Beginning balance	20,219	23,890	0
Increase Decrease In Derivative Liability From Issuance Retirement Of Derivatives			21,567
Decrease In Derivative Due To Conversion Of Debt	0
Unrealized Gain (Loss) on Derivatives	(3,290)	(3,671)	2,323
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Ending Balance	16,929	20,219	23,890
Unamortized Debt Discount [Roll Forward]
Debt Instrument, Unamortized Discount Beginning Balance	38,353	39,755	0
Issuance of convertible notes - embedded derivative			21,567
Increase of convertible notes - beneficial conversion feature			18,808
Conversion of $11,000 of 3.875% Variable Interest Senior Convertible Debentures due June 15, 2011	0
Amortization of embedded derivatives	(1,415)	(749)	(331)
Amortization Of beneficial conversion feature	(1,234)	(653)	(289)
Debt Instrument, Unamortized Discount Ending Balance	35,704	38,353	39,755
Interest Rate Risk [Member] | Convertible Debt [Member] | Variable Interest 3.875% Senior Convertible Debentures [Member]
Fair Value Of Derivatives [Roll Forward]
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Beginning balance	82,949	81,574	51,829
Decrease In Derivative Due To Conversion Of Debt	(8)
Unrealized Gain (Loss) on Derivatives	1,544	1,375	29,745
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Ending Balance	84,485	82,949	81,574
Unamortized Debt Discount [Roll Forward]
Debt Instrument, Unamortized Discount Beginning Balance	83,060	83,589	83,993
Issuance of convertible notes - embedded derivative			0
Increase of convertible notes - beneficial conversion feature			0
Conversion of $11,000 of 3.875% Variable Interest Senior Convertible Debentures due June 15, 2011	3
Amortization of embedded derivatives	(195)	(575)	(455)
Amortization Of beneficial conversion feature	80	46	51
Debt Instrument, Unamortized Discount Ending Balance	82,948	83,060	83,589
Interest Rate Risk [Member] | Convertible Debt [Member] | Five Percent Variable Interest Senior Convertible Notes due November 15, 2011 [Member]
Fair Value Of Derivatives [Roll Forward]
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Beginning balance	0	0	25,416
Decrease In Derivative Due To Conversion Of Debt	0
Unrealized Gain (Loss) on Derivatives	0	0	620
Derivative Financial Instruments, Liabilities, Fair Value Disclosure Ending Balance	0	0	0
Unamortized Debt Discount [Roll Forward]
Debt Instrument, Unamortized Discount Beginning Balance	0	0	39,565
Issuance of convertible notes - embedded derivative			0
Increase of convertible notes - beneficial conversion feature			0
Conversion of $11,000 of 3.875% Variable Interest Senior Convertible Debentures due June 15, 2011	0
Amortization of embedded derivatives	0	0	(3,394)
Amortization Of beneficial conversion feature	0	0	(1,883)
Debt Instrument, Unamortized Discount Ending Balance	0	0	0
Variable Interest 6.75% Senior Convertible Debentures [Member]
Fair Value Of Derivatives [Roll Forward]
Increase Decrease In Derivative Liability From Issuance Retirement Of Derivatives			19,082
Variable Interest 6.75% Senior Convertible Debentures [Member] | Convertible Debt [Member]
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			(3,311)
Variable Interest 6.75% Senior Convertible Debentures [Member] | Interest Rate Risk [Member] | Convertible Debt [Member] | Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member]
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			0
Variable Interest 6.75% Senior Convertible Debentures [Member] | Interest Rate Risk [Member] | Convertible Debt [Member] | Variable Interest 6.75% Senior Convertible Debentures [Member]
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			0
Variable Interest 6.75% Senior Convertible Debentures [Member] | Interest Rate Risk [Member] | Convertible Debt [Member] | Variable Interest 3.875% Senior Convertible Debentures [Member]
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			0
Variable Interest 6.75% Senior Convertible Debentures [Member] | Interest Rate Risk [Member] | Convertible Debt [Member] | Five Percent Variable Interest Senior Convertible Notes due November 15, 2011 [Member]
Fair Value Of Derivatives [Roll Forward]
Increase Decrease In Derivative Liability From Issuance Retirement Of Derivatives			(2,485)
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			(3,311)
Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member]
Fair Value Of Derivatives [Roll Forward]
Increase Decrease In Derivative Liability From Issuance Retirement Of Derivatives			20,764
Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member] | Convertible Debt [Member]
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			(30,977)
Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member] | Interest Rate Risk [Member] | Convertible Debt [Member] | Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member]
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			0
Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member] | Interest Rate Risk [Member] | Convertible Debt [Member] | Variable Interest 6.75% Senior Convertible Debentures [Member]
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			0
Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member] | Interest Rate Risk [Member] | Convertible Debt [Member] | Variable Interest 3.875% Senior Convertible Debentures [Member]
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			0
Variable Interest 6 Point 75 Percent Senior Convertible Exchange Notes [Member] | Interest Rate Risk [Member] | Convertible Debt [Member] | Five Percent Variable Interest Senior Convertible Notes due November 15, 2011 [Member]
Fair Value Of Derivatives [Roll Forward]
Increase Decrease In Derivative Liability From Issuance Retirement Of Derivatives			(23,551)
Unamortized Debt Discount [Roll Forward]
Write off unamortized debt discount			$ (30,977)