Debt (Schedule Of Interest Expense, Net) (Detail) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
Debt Instrument [Line Items]
Interest expense, net	$ 12,666,000	$ 9,446,000	$ 34,549,000	$ 27,883,000
Continuing Operations [Member]
Debt Instrument [Line Items]
Contractual and other interest expense	10,400,000	7,400,000	27,900,000	21,800,000
Accretion of senior convertible note discount	1,300,000	1,200,000	3,900,000	3,700,000
Amortization of deferred financing costs	1,000,000	900,000	3,000,000	2,700,000
Total interest expense	12,700,000	9,500,000	34,800,000	28,200,000
Interest income	0	(100,000)	(300,000)	(300,000)
Interest expense, net	$ 12,700,000	$ 9,400,000	$ 34,500,000	$ 27,900,000