Restatement Of Consolidated Financial Statements (Schedule Of Errors Corrections On Consolidated Statement Of Stockholders Equity) (Detail) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2009 Common Stock [Member]	Dec. 31, 2008 Common Stock [Member]	Dec. 31, 2009 Treasury Stock [Member]	Dec. 31, 2008 Treasury Stock [Member]	Dec. 31, 2009 Additional Paid In Capital [Member]	Dec. 31, 2008 Additional Paid In Capital [Member]	Dec. 31, 2009 Accumulated Deficit (Retained Earnings) [Member]	Dec. 31, 2008 Accumulated Deficit (Retained Earnings) [Member]	Dec. 31, 2009 Accumulated Other Comprehensive Income Of Continuing Operations [Member]	Dec. 31, 2008 Accumulated Other Comprehensive Income Of Continuing Operations [Member]	Dec. 31, 2011 As Reported [Member]	Dec. 31, 2010 As Reported [Member]	Dec. 31, 2011 As Reported [Member] Common Stock [Member]	Dec. 31, 2010 As Reported [Member] Common Stock [Member]	Dec. 31, 2011 As Reported [Member] Treasury Stock [Member]	Dec. 31, 2010 As Reported [Member] Treasury Stock [Member]	Dec. 31, 2011 As Reported [Member] Additional Paid In Capital [Member]	Dec. 31, 2010 As Reported [Member] Additional Paid In Capital [Member]	Dec. 31, 2011 As Reported [Member] Accumulated Deficit (Retained Earnings) [Member]	Dec. 31, 2010 As Reported [Member] Accumulated Deficit (Retained Earnings) [Member]	Dec. 31, 2011 As Reported [Member] Accumulated Other Comprehensive Income Of Continuing Operations [Member]	Dec. 31, 2010 As Reported [Member] Accumulated Other Comprehensive Income Of Continuing Operations [Member]	Dec. 31, 2011 Adjustment [Member]	Dec. 31, 2010 Adjustment [Member]	Dec. 31, 2011 Adjustment [Member] Common Stock [Member]	Dec. 31, 2010 Adjustment [Member] Common Stock [Member]	Dec. 31, 2011 Adjustment [Member] Treasury Stock [Member]	Dec. 31, 2010 Adjustment [Member] Treasury Stock [Member]	Dec. 31, 2011 Adjustment [Member] Additional Paid In Capital [Member]	Dec. 31, 2010 Adjustment [Member] Additional Paid In Capital [Member]	Dec. 31, 2011 Adjustment [Member] Accumulated Deficit (Retained Earnings) [Member]	Dec. 31, 2010 Adjustment [Member] Accumulated Deficit (Retained Earnings) [Member]	Dec. 31, 2011 Adjustment [Member] Accumulated Other Comprehensive Income Of Continuing Operations [Member]	Dec. 31, 2010 Adjustment [Member] Accumulated Other Comprehensive Income Of Continuing Operations [Member]	Dec. 31, 2011 Restated [Member]	Dec. 31, 2010 Restated [Member]	Dec. 31, 2011 Restated [Member] Common Stock [Member]	Dec. 31, 2010 Restated [Member] Common Stock [Member]	Dec. 31, 2011 Restated [Member] Treasury Stock [Member]	Dec. 31, 2010 Restated [Member] Treasury Stock [Member]	Dec. 31, 2011 Restated [Member] Additional Paid In Capital [Member]	Dec. 31, 2010 Restated [Member] Additional Paid In Capital [Member]	Dec. 31, 2011 Restated [Member] Accumulated Deficit (Retained Earnings) [Member]	Dec. 31, 2010 Restated [Member] Accumulated Deficit (Retained Earnings) [Member]	Dec. 31, 2011 Restated [Member] Accumulated Other Comprehensive Income Of Continuing Operations [Member]	Dec. 31, 2010 Restated [Member] Accumulated Other Comprehensive Income Of Continuing Operations [Member]
Additional Paid-in Capital	$ 1,685,162	$ 1,008,117	$ 694	$ 473	$ (150)	$ (150)	$ 1,296,391	$ 816,490	$ 264,917	$ 186,588	$ 82,994	$ (39,170)	$ 266,370	$ 1,564,671	$ 727	$ 708	$ (150)	$ (150)	$ 1,369,471	$ 1,343,639	$ (1,131,566)	$ 160,250	$ 27,888	$ 60,224	$ (59,044)	$ (31,475)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ (66,318)	$ (34,750)	$ 7,274	$ 3,275	$ 207,326	$ 1,533,196	$ 727	$ 708	$ (150)	$ (150)	$ 1,369,471	$ 1,343,639	$ (1,197,884)	$ 125,500	$ 35,162	$ 63,499
Accumulated other comprehensive income of continuing operations	$ 1,685,162	$ 1,008,117	$ 694	$ 473	$ (150)	$ (150)	$ 1,296,391	$ 816,490	$ 264,917	$ 186,588	$ 82,994	$ (39,170)	$ 266,370	$ 1,564,671	$ 727	$ 708	$ (150)	$ (150)	$ 1,369,471	$ 1,343,639	$ (1,131,566)	$ 160,250	$ 27,888	$ 60,224	$ (59,044)	$ (31,475)	$ 0	$ 0	$ 0	$ 0	$ 0	$ 0	$ (66,318)	$ (34,750)	$ 7,274	$ 3,275	$ 207,326	$ 1,533,196	$ 727	$ 708	$ (150)	$ (150)	$ 1,369,471	$ 1,343,639	$ (1,197,884)	$ 125,500	$ 35,162	$ 63,499