Accounts Payable, Accrued Expenses and Other (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Accounts payable, accrued expenses and other
Accounts payable	$ 7,361	$ 283
Accrued goods and services	27,694	17,615
Accrued payroll and related benefits	6,146	5,853
Accrued interest	1,562	306
Accrued dividends payable	26	28
Total accounts payable, accrued expenses, and other	42,913	24,936
License and Collaboration Agreements | Sanofi
Accounts payable, accrued expenses and other
Contractual liability	$ 124	$ 851