Consolidated Statements Of Shareholders' Equity (USD $) In Thousands	Class A Common Stock [Member]	Additional Paid-In Capital [Member] Shares - Hedge [Member]	Additional Paid-In Capital [Member]	Accumulated Deficit [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Shares - Hedge [Member]	Total
BALANCE, Amount at Dec. 31, 2013	$ 1,284		$ 2,907,446	$ (2,518,085)	$ (33,679)		$ 356,966
BALANCE, Shares at Dec. 31, 2013	128,432
Net income				1,407			1,407
Common stock issued in connection with stock purchase/option plans, Amount	4		85				89
Common stock issued in connection with stock purchase/option plans, Shares	355
Non-cash compensation			4,684				4,684
Settlement of convertible notes, Amount			34				34
Settlement of convertible notes, Shares	1
Settlement of convertible note hedges, Amount		1				1
Foreign currency translation adjustments					33,007		33,007
BALANCE, Amount at Mar. 31, 2014	$ 1,288		$ 2,912,250	$ (2,516,678)	$ (672)		$ 396,188
BALANCE, Shares at Mar. 31, 2014	128,788