Basis of Presentation and Summary of Significant Accounting Policies - Revenue Recognition and Related Sales Allowance and Accruals (Details) $ in Thousands	3 Months Ended
Mar. 31, 2017 USD ($) deliverable	Mar. 31, 2016 USD ($)
Product Revenue
Gross product sales	$ 206,724	$ 152,192
Provision for product sales allowances and accruals:
Contractual adjustments	69,829	45,581
Governmental rebates	24,378	17,047
Total	94,207	62,628
Product sales, net	$ 112,517	$ 89,564
Service Revenue
Number of service revenue deliverables \| deliverable	2
Prepayment term for storage of newborn cord blood and tissue units (in years)	18 years

The aggregate selling price reductions recognized during an accounting period due to contractual adjustments.

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Number of deliverables

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No definition available.

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- Definition

The prepayment term for storage of newborn cord blood and tissue units ("storage services").

+ References

No definition available.

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- Definition

Product Revenue [Abstract]

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No definition available.

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- Definition

The aggregate selling price reductions recognized during an accounting period due to government rebates.

+ References

No definition available.

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- Definition

n/a.

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No definition available.

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- Definition

Aggregate of: (i) sales discounts given by the entity, including, but not limited to, early payments of accounts due, (ii) the total deduction from sales during the period arising from goods returned by customers (other than under warranty provisions), and (iii) price reductions (allowance, price protection agreements) given by the entity. Discounts, returns and allowances are a deduction from gross revenue in arriving at net revenue.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 50
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68069731&loc=d3e63676-111659

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03(1)(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 15
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=68051624&loc=d3e47468-111626

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- Definition

Aggregate revenue during the period from sale of goods in the normal course of business, before deducting returns, allowances and discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1(a))
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

Aggregate revenue during the period from the sale of goods in the normal course of business, after deducting returns, allowances and discounts.

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