The amount of previously reported deferred or unearned revenue that was recognized as revenue during the period. For cash flows, this element primarily pertains to amortization of deferred credits on long-term arrangements. As a noncash item, it is deducted from net income when calculating cash provided by or used in operations using the indirect method.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 605
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB TOPIC 13.A.4(a).Q1)
-URI http://asc.fasb.org/extlink&oid=27012821&loc=d3e214044-122780

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 13
-Section A
-Subsection 1

Name:	us-gaap_RecognitionOfDeferredRevenue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Summary of Significant Accounting Policies - Warranty (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Product Liability Contingency [Line Items]
Deferred Revenue	$ 3.5	$ 2.1	$ 1.0
Direct Customer [Member] \| Control Units [Member]
Product Liability Contingency [Line Items]
Product warranty term	1 year
Direct Customer [Member] \| Applicators [Member]
Product Liability Contingency [Line Items]
Product warranty term	1 year
International [Member] \| Indirect Customer [Member] \| Control Units [Member]
Product Liability Contingency [Line Items]
Product warranty term	3 years
International [Member] \| Indirect Customer [Member] \| Applicators [Member]
Product Liability Contingency [Line Items]
Product warranty term	1 year