Debt (Schedule Of Interest Expense, Net) (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Instrument [Line Items]
Interest expense, net	$ 46,442,000	$ 37,376,000	$ 34,466,000
Continuing Operations [Member]
Debt Instrument [Line Items]
Contractual and other interest expense	37,600,000	29,200,000	27,400,000
Accretion of senior convertible note discount	5,200,000	4,900,000	4,200,000
Amortization of deferred financing costs	4,000,000	3,700,000	3,400,000
Total interest expense	46,800,000	37,800,000	35,000,000
Interest income	(400,000)	(400,000)	(500,000)
Interest expense, net	$ 46,400,000	$ 37,400,000	$ 34,500,000