The Company (Purchase Price Allocation) (Details) (USD $) In Thousands, unless otherwise specified	6 Months Ended			0 Months Ended
	Jun. 30, 2013	Jun. 30, 2014	Dec. 31, 2013	Jan. 18, 2013 BioVectra [Member]	Jun. 30, 2014 BioVectra [Member]	Dec. 31, 2013 BioVectra [Member]
Business Acquisition [Line Items]
Current assets excluding inventory				$ 11,691
Inventory				11,774
Property and equipment				35,221
Other non-current assets				1,708
Current deferred tax asset				141
Intangibles				35,581
Goodwill		20,527	20,464	21,914	20,527	20,464
Current liabilities				(6,451)
Non-current liabilities, excluding long-term debt				(1,994)
Non-current deferred tax liability				(12,012)
Long-term debt				(16,875)
Total net assets acquired				80,698
Cash consideration paid to BioVectra shareholders	50,803			50,315
Estimated fair value of contingent consideration	30,383			30,383
Total purchase consideration				$ 80,698