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Commitment and Contingencies - Narratives (Details) - Cryobiological storage - USD ($) $ in Millions	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Contingencies
Warranty accrual	$ 3.8	$ 3.8
Operating Segments | D&S West
Contingencies
Warranty accrual	$ 3.8	$ 3.8

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-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
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-Section 50
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