Additional commitment amount under the line of credit.

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Debt issuance costs paid to related party.

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Decrease in the variable interest rate margin.

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Expensed third party debt issuance costs.

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Percentage change of present value of cash flow between the original and modified debt.

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Total third party debt issuance costs related to credit agreement amendment.

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Face (par) amount of debt instrument at time of issuance.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of the required periodic payments applied to principal.

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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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Fair value as of the balance sheet date of the embedded derivative or group of embedded derivatives classified as an asset.

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Amount of gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3).

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The carrying value as of the balance sheet date of the noncurrent portion of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The cash inflow from a contractual arrangement with the lender, including letter of credit, standby letter of credit and revolving credit arrangements, under which borrowings can be made up to a specific amount at any point in time with maturities due beyond one year or the operating cycle, if longer.

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Amount of cash outflow for the payment of debt classified as other, maturing after one year or the operating cycle, if longer.

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Credit Agreement (Details) - USD ($)				3 Months Ended			9 Months Ended
Credit Agreement (Details) - USD ($)	Apr. 16, 2021	Mar. 31, 2021	Feb. 12, 2021	Sep. 30, 2021	Mar. 31, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Feb. 28, 2021	Nov. 30, 2020	Oct. 27, 2020	May 06, 2020	Apr. 23, 2019	Aug. 15, 2018
Debt Instrument [Line Items]
Quarterly repayments			$ 4,600,000
Embedded derivative	$ 17,800,000								$ 5,600,000
Loss on settlement of debt							$ 16,852,000	$ 0
Line of credit non current outstanding		$ 400,000,000			$ 400,000,000
Change in fair value recognized in earnings	$ 1,100,000			$ 0		$ 0	$ 7,600,000	$ 0
Closing Term Loans
Debt Instrument [Line Items]
New term loan													$ 400,000,000	$ 820,000,000
Amended Revolving Credit Facility
Debt Instrument [Line Items]
Lender commitment under the line of credit			10,000,000								$ 540,000,000			$ 50,000,000
Debt instrument increase in the credit facility										$ 150,000,000
Proceeds from long term line of credit facility		250,000,000
Line of credit facility maximum borrowing capacity		600,000,000			600,000,000
Amended Revolving Credit Facility \| Affiliate Of KKR Denali
Debt Instrument [Line Items]
Proceeds from long term line of credit facility		250,000,000
Line of credit facility maximum borrowing capacity		$ 600,000,000			600,000,000
Decrease in the variable interest rate margin	0.25%
Third Amendment Term Loans
Debt Instrument [Line Items]
New term loan												$ 300,000,000
Repayment of long term debt			298,200,000
Fifth Amendment Term Loan
Debt Instrument [Line Items]
New term loan			$ 597,800,000
Percentage change of present value of cash flow between the original and modified debt			10.00%
Third party debt issuance costs that were expensed immediately					2,900,000
Debt issuance costs			$ 3,500,000
Debt issuance costs, gross			600,000
Loss on settlement of debt					$ 16,900,000
Fifth Amendment Term Loan \| Contingent Interest Adjustment Feature
Debt Instrument [Line Items]
Embedded derivative			5,600,000
Fifth Amendment Term Loan And Revolving Credit Facility
Debt Instrument [Line Items]
Debt issuance costs paid to related party			$ 800,000