Income Taxes - Carrying amounts of assets and liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred tax liabilities
Operating lease assets	$ (63,143)	$ (67,400)
Other	(3,456)	(4,623)
Total deferred tax liabilities	(66,599)	(72,023)
Deferred tax assets
Investment impairment	20,619	22,169
Investment in partnership ("Outside Basis Deferred Tax Asset")	271,513	241,805
Tax Receivable Agreement liability	46,328	36,486
Net operating loss carryforward	137,377	124,117
Operating lease liabilities	73,476	79,639
Other reserves	28,695	29,461
Gross deferred tax assets	578,008	533,677
Valuation allowance	(312,088)	(295,946)
Net deferred tax assets	$ 199,321	$ 165,708