Bank Credit Agreements and Other Short-Term and Long-Term Debt (Interest expense) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Debt Instruments [Abstract]
Notes Contractual Interest Expense			$ 2,267
Amortization of discount on convertible senior notes	0	0	6,032
Amortization Of Debt Issuance Cost			412
Total			$ 8,711