Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Deferred income tax assets
Tax Receivable Agreement	$ 197,598	$ 167,117
Share-based compensation	15,572	9,419
Intangibles	2,467	12,738
Fixed assets and other	44,908	21,088
Tax credits and net operating loss carryforwards	86,420	44,972
Less: Valuation allowance on net operating loss carryforwards and tax credits	(60,594)	(44,947)
Total deferred income tax assets	286,371	210,387
Deferred income tax liabilities
Intangibles	71,700	10,028
Total deferred income tax liabilities	$ 71,700	$ 10,028