The price per share of the conversion feature embedded in the debt instrument.

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The number of shares that can be issued in exchange for the original debt if converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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Reduction in the Company's potentially dilutive shares for computation of earnings per share due to debt extinguishment.

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The maximum number of trading days within a specified time period that the closing sale price of the entity's common stock exceeds the prevailing conversion price of the debentures by a specified percentage.

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The period immediately prior to an election to convert debentures during which the average price of shares traded is determined for the purpose of calculating the conversion rate.

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The principal amount of notes used in the determination of the initial conversion rate, which is subject to adjustment.

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The amount of subsequent adjustments to additional paid in capital for convertible financial instruments where a component of equity and a component of debt are recognized.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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The price per share of the conversion feature embedded in the debt instrument.

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

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Contractual interest rate for funds borrowed, under the debt agreement.

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Percentage price of original principal amount of debt at which debt can be redeemed by the issuer.

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

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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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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 cash inflow from a borrowing with the highest claim on the assets of the entity in case of bankruptcy or liquidation (with maturities initially due after one year or beyond the operating cycle, if longer).

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The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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Debt (Details) - USD ($)	1 Months Ended		3 Months Ended	12 Months Ended
Debt (Details) - USD ($)	Jul. 31, 2022	Aug. 31, 2020	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Loss on debt extinguishment				$ 40,199,000	$ 36,914,000	$ 26,736,000
Interest paid				$ 53,700,000	71,700,000	54,300,000
Convertible Junior Subordinated Debentures, at 9% per annum, Due 2063
Debt Instrument [Line Items]
Stated interest rate (in hundredths)				9.00%
Extinguishment of debt				$ 89,100,000	98,600,000	48,100,000
Repayments of long-term debt				121,200,000	135,500,000	61,600,000
Loss on debt extinguishment				$ 32,100,000	$ 36,900,000	$ 10,200,000
Reduction in potentially dilutive shares due to debt extinguishment				6,800,000	7,500,000	3,600,000
Reacquisition of convertible junior subordinated debentures-equity component						$ 2,700,000
Redemption price, percentage (in hundredths)				100.00%
Conversion rate (in shares per $1,000 note)				77.9620
Principal amount of notes used in determining conversion rate				$ 1,000
Conversion price (in dollars per share)				$ 12.83
Period preceding election to convert				5 days
Closing sale price of our common stock for consideration of redemption (in dollars per share)				$ 16.67
Minimum number of trading days				20 days
Maximum number of trading days				30 days
Federal Home Loan Bank Advances (FHLB)
Debt Instrument [Line Items]
Loss on debt extinguishment			$ 1,300,000
Federal Home Loan Bank Advance prepayment amount			$ 156,300,000
Senior Notes \| 5.75% Senior Notes due 2023
Debt Instrument [Line Items]
Stated interest rate (in hundredths)				5.75%
Extinguishment of debt						182,700,000
Loss on debt extinguishment	$ 6,800,000					16,500,000
Purchase of senior notes	$ 248,400,000					$ 197,800,000
Senior Notes \| 5.75% Senior Notes due 2023 \| US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.50%
Senior Notes \| 5.25% Senior Notes due 2028
Debt Instrument [Line Items]
Stated interest rate (in hundredths)				5.25%
Debt instrument, face amount		$ 650,000,000		$ 650,000,000
Proceeds from issuance of debt		640,300,000
Debt issuance costs		$ 2,000,000
Ownership percentage threshold for declaration of due and payable				25.00%
Senior Notes \| 5.25% Senior Notes due 2028 \| Debt Instrument, Redemption, Period One
Debt Instrument [Line Items]
Redemption price, percentage (in hundredths)				102.625%
Senior Notes \| 5.25% Senior Notes due 2028 \| Debt Instrument, Redemption, Period One \| US Treasury (UST) Interest Rate
Debt Instrument [Line Items]
Basis spread on variable rate				0.50%
Senior Notes \| 5.25% Senior Notes due 2028 \| Debt Instrument, Redemption, Period Two
Debt Instrument [Line Items]
Redemption price, percentage (in hundredths)				102.625%
Senior Notes \| 5.25% Senior Notes due 2028 \| Debt Instrument, Redemption, Period Three
Debt Instrument [Line Items]
Redemption price, percentage (in hundredths)				101.313%
Senior Notes \| 5.25% Senior Notes due 2028 \| Debt Instrument, Redemption, Period Four
Debt Instrument [Line Items]
Redemption price, percentage (in hundredths)				100.00%