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://fasb.org/us-gaap/role/ref/legacyRef
-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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-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 3: http://fasb.org/us-gaap/role/ref/legacyRef
-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

Name:	us-gaap_ProductWarrantyAccrual
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Commitments and Contingencies (Details) $ in Millions	1 Months Ended		6 Months Ended
Commitments and Contingencies (Details) $ in Millions	Sep. 30, 2012 defendant	Jan. 31, 2012 defendant	Sep. 30, 2018 USD ($)	Apr. 01, 2018 USD ($)
Loss Contingencies [Line Items]
Standard warranty period			1 year
Extended warranty period			2 years
Warranty accrual \| $			$ 0.3	$ 0.3
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