Long-Term Debt and Capital Lease Obligations (Tables)

3 Months Ended

Mar. 31, 2012

Debt Disclosure [Abstract]

Components of Long-Term Debt

Long-term debt consists of the following:

	June 30, 2012			December 31, 2011
2.25% Senior convertible debentures:
Principal	$	349,995		$	349,995
Unamortized debt discount	(14,433		)	(21,533		)
Net carrying amount of senior convertible debentures	335,562			328,462
Term loan facilities	315,420			356,322
Revolving credit facility	35,000			33,000
Other long-term debt represents secured and unsecured promissory notes, interest rates ranging from 0% to 0.5% at both June 30, 2012 and December 31, 2011, maturing between 2012 and 2013	222			118
Total debt	686,204			717,902
Less: current portion of long-term debt	(134,812		)	(14,732		)
Long-term debt	$	551,392		$	703,170

Schedule of Principal Maturities of Existing Debt Excluding Unamortized Debt Discount

Principal maturities of existing debt, which excludes unamortized discount, for the periods set forth in the table below are as follows:

Twelve Months Ending
June 2013	$	384,137
June 2014	38,766
June 2015	62,884
June 2016	59,950
June 2017	154,900
Total	$	700,637