Basis of Presentation and Summary of Significant Accounting Policies - Revenue Recognition (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) item	Jun. 30, 2015 USD ($)
Provision for U.S. product sales allowances and accruals
Gross U.S. product sales	$ 176,581	$ 136,589	$ 328,773	$ 262,106
Contractual adjustments	53,938	39,251	99,519	74,385
Government rebates	19,660	12,686	36,707	25,654
Total provision for U.S product sales allowances and accruals	73,598	51,937	136,226	100,039
U.S. products sales, net	$ 102,983	84,652	$ 192,547	$ 162,067
Medicaid reserves adjustments relating to Makena		4,000
Chargeback reserves adjustments relating Makena		$ 1,900
Service Revenue
Number of service revenue deliverables | item			2
Prepayment term for storage of newborn cord blood and tissue units			18 years