Other Assets (Tables)

12 Months Ended

Dec. 31, 2011

Other Assets [Abstract]

Schedule Of Other Assets

	2011							2010							Weighted Average Life
	Cost		Accumulated Amortization			Net		Cost		Accumulated Amortization			Net
Intangible assets:
Technology licenses	$	44,827	$	(40,860	)	$	3,967	$	44,762	$	(39,763	)	$	4,999		12
Patents		6,503		(3,306	)		3,197		6,503		(2,655	)		3,848		10
Customer relationships		17,649		(6,901	)		10,748		17,649		(5,544	)		12,105		13
Goodwill		29,990		—			29,990		29,990		—			29,990
Other		1,161		—			1,161		1,161		—			1,161
Total intangible assets		100,130		(51,067	)		49,063		100,065		(47,962	)		52,103
Available-for-sale investments		30,113		—			30,113		—		—			—
Notes receivable from affiliate		2,383		—			2,383		3,575		—			3,575
Turnaround costs		86,728		(57,175	)		29,553		85,307		(49,864	)		35,443		5
Debt issuance costs		20,628		(8,989	)		11,639		17,930		(7,307	)		10,623		10
Other, net		22,502		(9,678	)		12,824		19,444		(9,940	)		9,504		5
Other assets, net	$	262,484	$	(126,909	)	$	135,575	$	226,321	$	(115,073	)	$	111,248

Available-For-Sale Investments

	December 31, 2011
	Cost		Gross Unrealized Gains		Gross Unrealized Losses (1)			Fair Value
Available-for-sale equity securities	$	28,265	$	1,981	$	(133	)	$	30,113

(1) All unrealized loss positions were held at a loss for less than 12 months.