Non-controlling Interest - Narrative (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Aug. 31, 2018	Dec. 31, 2017	Sep. 30, 2018	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Noncontrolling Interest [Line Items]
Distribution Made to Limited Liability Company (LLC) Member, Distributions Paid, Per Unit				$ 0.059
Shares of common stock issued (in shares)		572,432
Shares authorized for repurchase (in shares)	$ 150,000
Repurchase of common units and cancellation of Class B common stock (in shares)	6,100
Payments for Repurchase of Common Stock			$ 60,600	$ 60,644	$ 0	$ 0
Switch, Ltd.
Noncontrolling Interest [Line Items]
Total distribution made			$ 11,600		185,400
Cash distributions made to members in accordance with percentage interests					112,000
Cash distributions made to members with unreturned capital contributions					8,200
Return to Capital Distribution [Member] | Switch, Ltd.
Noncontrolling Interest [Line Items]
Distribution Made to Limited Liability Company (LLC) Member, Cash Distributions Paid					$ 73,400