Depreciation and Amortization, by Segment (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Property, Plant and Equipment [Line Items]
Depreciation and amortization of intangible assets	$ 28,641	$ 30,907	$ 57,068	$ 61,979
Device Solutions [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization of intangible assets	6,346	6,442	12,782	12,916
Networked Solutions Segment [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization of intangible assets	3,205	3,071	6,453	6,315
Outcomes Segment [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization of intangible assets	1,285	1,638	2,587	3,347
Corporate Unallocated [Member]
Property, Plant and Equipment [Line Items]
Depreciation and amortization of intangible assets	$ 17,805	$ 19,756	$ 35,246	$ 39,401