Consolidated Statements Of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flow from operating activities:
Net income	$ 246,850	$ 309,278
Adjustments to reconcile net income to cash provided by operations:
Depreciation and amortization	48,415	45,074
Related party Tax Receivable Agreement expense (benefit)	47	(3,346)
Deferred income tax provision	(6,180)	16,237
Stock or Unit Option Plan Expense	16,293	1,887
Interest expense	9,750	4,768
Other charges, net	6,784	448
Net change in working capital*	47,174	85,098
Repayments Of Related Party Payable	(21,799)	(27,857)
Change in long-term assets and liabilities	(4,323)	(14,922)
Net cash provided by operating activities	343,011	416,665
Cash flow from investing activities:
Capital expenditures	(40,426)	(30,688)
Proceeds from the sale of assets	356	78
Net cash used in investing activities	(40,070)	(30,610)
Cash flow from financing activities:
Repurchase of common stock-non-related party	(42,378)	(30,099)
Payments Related to Tax Withholding for Share-based Compensation	(4,074)	(71)
Principal repayments on long-term debt	(300,000)	(249,214)
Dividends paid to non-related-party	(5,446)	(7,553)
Dividends paid to related-party	(2,567)	(20,650)
Proceeds from (Payments for) Other Financing Activities	(3,264)	0
Net cash used in financing activities	(360,838)	(307,587)
Net change in cash and cash equivalents	(57,897)	78,468
Effect of exchange rate changes on cash and cash equivalents	(889)	(562)
Cash and cash equivalents at beginning of period	145,442	80,935
Cash and cash equivalents at end of period	86,656	158,841
* Net change in working capital due to changes in the following components:
Accounts and notes receivable, net	(3,455)	78,408
Inventories	(7,246)	10,371
Prepaid expenses and other current assets	(17,664)	5,437
Income taxes payable	(2,371)	16,032
Accounts payable and accruals	71,748	(25,078)
Interest payable	6,162	(72)
Net change in working capital	47,174	85,098
Payment Of Financing Costs and Debt Restructuring Costs	$ 3,109	$ 0