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Restructuring (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Restructuring Reserve [Roll Forward] |  |  |  |
Beginning balance |  |  | $ 0.4 | $ 0.0
Charge to expense | $ 0.1 | $ 0.4 | 0.5 | 1.6
Cash payments |  |  | (0.7) | (1.2)
Ending balance | 0.2 | 0.4 | 0.2 | 0.4
Operating Segments | Safety & Security Systems | Facility Closing [Member] |  |  |  |
Restructuring Reserve [Roll Forward] |  |  |  |
Charge to expense | $ 0.1 |  | $ 0.5 |
Operating Segments | Safety & Security Systems | Voluntary Reduction-In-Force Plan |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |
Severance costs |  | $ 0.4 |  | 1.6
Restructuring Reserve [Roll Forward] |  |  |  |
Charge to expense |  |  |  | $ 1.6

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- Definition Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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