Related Party - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands			5 Months Ended	7 Months Ended		12 Months Ended
	Jun. 03, 2019	Jun. 02, 2019	Jun. 02, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Related party transaction, fees			$ 600		$ 0		$ 1,100	$ 1,300
Threshold number of trading days price must remain above trigger price (days)						20 days
Trading period that price must remain above trigger price (days)						30 days
One Madison Group LLC
Related Party Transaction [Line Items]
Related party transaction, fees				$ 400
Director
Related Party Transaction [Line Items]
Related party transaction, fees						$ 50
Rack Holdings Inc. | Rhone Capital IV L.P
Related Party Transaction [Line Items]
Percentage of projected annual EBITDA		1.00%
Shares subject to a $12.50 earn-out
Related Party Transaction [Line Items]
Business combination, earn out price (usd per share)				$ 12.50	$ 12.50	$ 12.50	$ 12.50
Shares subject to a $12.50 earn-out | Common Class A (or, at each holder’s election, Class C ordinary shares)
Related Party Transaction [Line Items]
Business combination, earn out price (usd per share)				12.50	12.50	$ 12.50
Threshold number of trading days price must remain above trigger price (days)						20 days
Trading period that price must remain above trigger price (days)						30 days
Shares subject to a $12.50 earn-out | Common Class A (or, at each holder’s election, Class C ordinary shares) | One Madison Group LLC
Related Party Transaction [Line Items]
Business combination, earn out price (usd per share)				$ 12.50	$ 12.50	$ 12.50
Common Stock | Shares subject to a $12.50 earn-out | Common Class A (or, at each holder’s election, Class C ordinary shares) | One Madison Group LLC
Related Party Transaction [Line Items]
Threshold number of trading days price must remain above trigger price (days)						20 days
Trading period that price must remain above trigger price (days)						30 days
Private Placement | Common Class A (or, at each holder’s election, Class C ordinary shares)
Related Party Transaction [Line Items]
Sale of stock, number of shares issued in transaction (shares)	15,000,000
Private Placement | Forward Purchase Warrants
Related Party Transaction [Line Items]
Sale of stock, number of shares issued in transaction (shares)	5,000,000
Private Placement | Forward Purchase Warrants | One Madison Group LLC
Related Party Transaction [Line Items]
Sale of stock, number of shares issued in transaction (shares)	5,000,000