Carrying value as of the balance sheet date of obligations incurred through that date and payable for estimated claims under standard and extended warranty protection rights granted to customers.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)(1)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 460
-SubTopic 10
-Section 50
-Paragraph 8
-Subparagraph (c)(5)
-URI http://asc.fasb.org/extlink&oid=68068213&loc=d3e12565-110249

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.15(5))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Commitments and Contingencies - Narrative (Details) $ in Millions	1 Months Ended
	Nov. 30, 2016 patent	Sep. 30, 2012 defendant	Jan. 31, 2012 defendant	Dec. 31, 2017 USD ($)
Loss Contingencies [Line Items]
Warranty accrual \| $				$ 0.3
Patents allegedly infringed, number \| patent	3
Maxim I Properties Litigation \| Environmental Violation
Loss Contingencies [Line Items]
Number of defendants (more than)			30
Generator of Hazardous Waste Litigation \| Environmental Violation
Loss Contingencies [Line Items]
Number of defendants (more than)		50