Condensed Consolidated Statements of Stockholders' Deficit Statement - USD ($) $ in Thousands	Total	Common Stock Including Additional Paid in Capital [Member]	Accumulated Deficit [Member]	AOCI Attributable to Parent [Member]
Stockholders' Deficit	$ (1,385,474)	$ 15,707,126	$ (17,089,789)	$ (2,811)
Stock-based compensation expense		39,522
Stock Issued During Period, Value, Employee Stock Purchase Plan		13,152
Stock Repurchased During Period, Value		(583,485)
Net Income	463,974		463,974
Other Comprehensive Income (Loss), Net of Tax	392			392
Stockholders' Deficit	(1,425,167)	15,357,288	(16,779,728)	(2,727)
Stock-based compensation expense		13,081
Stock Issued During Period, Value, Employee Stock Purchase Plan		4,899
Stock Repurchased During Period, Value		(198,953)
Net Income			153,913
Other Comprehensive Income (Loss), Net of Tax	308			308
Stockholders' Deficit	(1,451,919)	15,176,315	(16,625,815)	(2,419)
Stockholders' Deficit	(1,490,100)	14,990,011	(16,477,490)	(2,621)
Stock-based compensation expense		37,526
Stock Issued During Period, Value, Employee Stock Purchase Plan		12,577
Stock Repurchased During Period, Value		(603,705)
Net Income	657,574		657,574
Other Comprehensive Income (Loss), Net of Tax	(120)			(120)
Stockholders' Deficit	(1,400,324)	14,592,929	(15,990,895)	(2,358)
Stock-based compensation expense		13,078
Stock Issued During Period, Value, Employee Stock Purchase Plan		4,281
Stock Repurchased During Period, Value		(173,879)
Net Income			170,979
Other Comprehensive Income (Loss), Net of Tax	(383)			(383)
Stockholders' Deficit	$ (1,386,248)	$ 14,436,409	$ (15,819,916)	$ (2,741)