Debt (Tables)

12 Months Ended

Dec. 31, 2011

Dec. 31, 2010

Debt [Abstract]

Summary Of Debt

	As of December 31, 2011				As of December 31, 2010
	Balance			Interest Rate	Balance			Interest Rate
Revolving credit facilities	$	89,600		Variable	$	—		Variable
2006 senior unsecured notes		125,000		Various		125,000		7.333%-7.871%
2011 senior unsecured notes		450,000		6.875%		—
Exchangeable senior notes
Principal amount		11,000		9.250%		91,175		6.125%-9.250%
Unamortized discount		(180	)			(2,585	)
		10,820				88,590
Term loans
Principal Amount		14,429		6.200%		157,683		Various
Unamortized discount		—				(1,303	)
		14,429				156,380
	$	689,849			$	369,970

Principal Payments Due For Debt

2012	$	39,832
2013		11,249
2014		265
2015		50,283
2016		125,299
Thereafter		463,101
Total	$	690,029