Income Taxes (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Income Taxes [Line Items]
Increase resulting from current period tax positions	$ 1,299
Long Term Liabilities [Member]
Income Taxes [Line Items]
Total amount of accrued interest and penalties resulting from unrecognized tax benefits	20,960
Accrued Expenses And Other Current Liabilities [Member]
Income Taxes [Line Items]
Total amount of accrued interest and penalties resulting from unrecognized tax benefits	$ 949
Years 2005 through 2010 [Member] | Anchen [Member]
Income Taxes [Line Items]
Number of states under audit	1
Years 2003 through 2009 [Member]
Income Taxes [Line Items]
Number of states under audit	1