Long-Term Debt - Schedule of Notes Payable (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Less: Current portion of notes payable	$ (6,493)	$ (4,800)
Long-term debt, gross	939,563	475,200
Less: debt issuance costs	(23,452)	(18,455)
Notes payable, net of current portion	916,111	456,745
Term loan 3
Debt Instrument [Line Items]
Term loans	252,531	480,000
Term loan 4
Debt Instrument [Line Items]
Term loans	293,525	0
Term loan 5
Debt Instrument [Line Items]
Term loans	100,000	0
Less: debt issuance costs	(1,000)
Senior Notes
Debt Instrument [Line Items]
Senior Notes	300,000	$ 0
Less: debt issuance costs	$ (6,800)

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Carrying value as of the balance sheet date of notes payable (with maturities initially due after one year or beyond the operating cycle if longer), excluding current portion.

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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Sum of the carrying values as of the balance sheet date of the portions of long-term notes payable due within one year or the operating cycle if longer.

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