Leasing Arrangements (Tables)

12 Months Ended

Dec. 31, 2011

Leasing Arrangements [Abstract]

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

The following is a schedule of future minimum rental payments required under operating leases that have initial or remaining non-cancelable terms in excess of one year as of December 31, 2011 (in thousands):

Year ended
December 31,
2012	$	32,180
2013	28,788
2014	25,240
2015	17,284
2016	9,720
Later years	16,134
Total minimum payments required	$	129,346

Schedule of Long-term Debt Instruments [Table Text Block]

The fair value of the Company’s fixed-rate debt facilities is based on quoted market prices in an active market and is summarized as follows (in thousands):

Fair Value of Financial Instruments

	December 31, 2011				December 31, 2010
Financial Instrument:	Book Value		Market Value		Book Value		Market Value
6.125% senior subordinated notes, due 2013, gross	$	—	$	—	$	250,000	$	251,300
6.875% senior subordinated notes, due 2015	—		—		525,000		535,500
7.75% senior subordinated notes, due 2020, gross	550,000		591,300		400,000		415,500
3.75% convertible senior subordinated notes, due 2025
Carrying value	361,345		—		353,505		—
Unamortized debt discount	213,655		—		221,495		—
Principal amount	575,000		816,500		575,000		636,400
4.00% junior subordinated convertible debentures, due 2033
Carrying value	203,675		—		201,282		—
Unamortized debt discount	141,325		—		143,718		—
Principal amount	345,000		318,800		345,000		266,900
3.25% convertible senior debentures, due 2035
Carrying value	384,799		—		370,837		—
Unamortized debt discount	67,701		—		81,663		—
Principal amount	452,500		404,600		452,500		427,600