Income Taxes (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Feb. 26, 2009
Income Tax Contingency [Line Items]
Statutory federal income tax rate	35.00%	35.00%	35.00%
Deferred tax assets	$ 33,100,000	$ 13,500,000
Deferred tax assets (liabilities), noncurrent	(164,500,000)	(128,700,000)
Increase in valuation allowance	39,700,000
Deferred tax asset valuation allowance	43,874,000	4,186,000
Unrecognized tax benefit affect if recognized	8,800,000	8,100,000
Alternative Minimum Tax Credit [Member]
Income Tax Contingency [Line Items]
Tax carryforwards	4,900,000
Foreign Net Operating Losses [Member]
Income Tax Contingency [Line Items]
Tax carryforwards	$ 169,800,000
Targanta [Member]
Income Tax Contingency [Line Items]
Percentage of voting interests acquired				100.00%