Borrowings - Senior Secured Term Loan (Details) $ in Thousands	Mar. 04, 2021 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Secured Debt
Debt Instrument [Line Items]
Unamortized debt issuance costs		$ (898)	$ (894)
Senior notes		900,760	437,672
SSTL
Debt Instrument [Line Items]
Unamortized debt issuance costs			(4,867)
SSTL \| Secured Debt
Debt Instrument [Line Items]
Long-term debt, gross		0	185,000
Unamortized debt issuance costs		0	(4,867)
Discount		0	(357)
Senior notes		$ 0	$ 179,776
Repayment of SSTL	$ 185,000
Loss on debt extinguishment	$ 8,400
Percentage of prepayment premium	0.02
Redemption premium	$ 3,700

Percentage of prepayment premium.

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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 discount.

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The cash outflow for the extinguishment of long-term borrowing, with the highest claim on the assets of the entity in case of bankruptcy or liquidation, before its maturity.

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Gross amount of debt extinguished.

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No definition available.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The excess of the (1) fair value of consideration transferred to the holders of a security in excess of (2) the carrying amount of the security reported on the registrant's balance sheet, which will be deducted from net earnings to derive net earnings available to common shareholders. This amount is generally an adjustment considered in the computation of earnings per share.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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