Long-Term Obligations (Tables)

12 Months Ended

Dec. 31, 2011

Long-Term Obligations [Abstract]

Schedule Of Long-Term Obligations

	2011			2010
	(In thousands)
Convertible debt to mature in 2037, bearing fixed interest of 2.75%, with a put/call option in 2012	$	275,000		$	275,000
Unamortized discount		(9,059	)		(19,273	)
Convertible debt to mature in 2037, bearing fixed interest of 2.75%, with a put/call option in 2014		275,000			275,000
Unamortized discount		(31,332	)		(40,953	)
Eurodollar loans under five-year revolving credit agreement bearing annual interest equal to the British Bankers Association LIBOR Rate ("BBA LIBOR") plus an applicable margin based on the Company's consolidated leverage ratio (consolidated funded indebtedness to consolidated EBITDA)		100,000			0
Other long-term liabilities		1,710			4,497
Contingent consideration		21,595			0
Unsecured acquisition obligations, net of imputed interest, payable in various installments through 2015		20,996			619
Total long-term obligations		653,910			494,890
Less: current installments		397,132			619
Long-term obligations, excluding current installments	$	256,778		$	494,271

Schedule Of Maturities Of Long-Term Obligations

	(In thousands)
2012	$	406,191
2013		7,494
2014		280,217
2015		394
2016		5
Thereafter		0
	$	694,301

Debt And Equity Components For Convertible Debentures

	December 31, 2011						December 31, 2010
	Series A			Series B			Series A			Series B
Principal amount of convertible debentures	$	275,000		$	275,000		$	275,000		$	275,000
Unamortized discount		(9,059	)		(31,332	)		(19,273	)		(40,953	)
Net carrying amount		265,941			243,668			255,727			234,047
Additional paid-in capital		29,065			41,238			29,065			41,238

Interest Expense

	December 31, 2011				December 31, 2010				December 31, 2009
	Series A		Series B		Series A		Series B		Series A		Series B
Contractual coupon interest	$	7,562	$	7,562	$	7,562	$	7,562	$	7,562	$	7,562
Amortization of discount on convertible debentures		10,214		9,621		9,541		8,954		8,913		8,333
Interest expense	$	17,776	$	17,183	$	17,103	$	16,516	$	16,475	$	15,895