Amount after tax of other comprehensive income (loss) attributable to noncontrolling interests.

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Name:	us-gaap_OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Restatement of Previously Issued Consolidated Financial Statements - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Dec. 31, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Comprehensive loss	$ (89,856)	$ (110,926)
Comprehensive loss attributable to noncontrolling interests and redeemable noncontrolling interests	(13,902)	(5,880)
Comprehensive loss attributable to Class A and Class B stockholders	$ (75,954)	(105,046)
Restatement Adjustment
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Comprehensive loss		(3,800)	$ (5,800)	$ 1,800
Comprehensive loss attributable to noncontrolling interests and redeemable noncontrolling interests		(7,900)
Comprehensive loss attributable to Class A and Class B stockholders		$ 4,100