Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_MinorityInterestLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Basis of Consolidation and Presentation Basis of Consolidation and Presentation - Narrative (Details)	Dec. 31, 2017	Dec. 31, 2016	May 15, 2016	Dec. 31, 2015
Purification Cellutions LLC
Noncontrolling Interest [Line Items]
Noncontrolling interest ownership percentage	30.00%	30.00%	30.00%	30.00%