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Restructuring Charges - Severance and Other Restructuring Charges Activity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Capital Light Initiative
Restructuring Reserve [Roll Forward]
Liability at beginning of period			$ 17,635
Charges	$ 2,781	$ 11,454	8,584	$ 11,454
Payments/Utilization			(8,771)
Liability at end of period	17,448		17,448
Capital Light Initiative \| Severance
Restructuring Reserve [Roll Forward]
Liability at beginning of period			6,151
Charges			4,120
Payments/Utilization			(1,865)
Liability at end of period	8,406		8,406
Capital Light Initiative \| Other restructuring charges
Restructuring Reserve [Roll Forward]
Liability at beginning of period			11,484
Charges			4,464
Payments/Utilization			(6,906)
Liability at end of period	9,042		9,042
Restructuring Plan, Other \| Severance
Restructuring Reserve [Roll Forward]
Liability at beginning of period			0
Charges			14,505
Payments/Utilization			(4,947)
Liability at end of period	$ 9,558		$ 9,558