Discontinued Operations (Narrative) (Details)	Dec. 31, 2018 shares	Aug. 31, 2018 shares	Aug. 07, 2018
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Distribution of shares outstanding to shareholders, conversion ratio	1.980295
Arlo
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Ownership percentage			84.20%
Shares, outstanding (in shares)		62,500,000
Number of shares distributed (in shares)	62,500,000