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Debt - Narrative (Details) $ / shares in Units, shares in Millions | 1 Months Ended | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 31, 2022 USD ($) | Jun. 30, 2022 USD ($) $ / shares | Mar. 31, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) $ / shares shares | Jun. 30, 2021 USD ($)
Debt Instrument [Line Items] |  |  |  |  |  |
Loss on debt extinguishment |  | $ 6,391,000 |  | $ 0 | $ 28,498,000 | $ 0
Total interest payments |  |  |  |  | $ 29,200,000 | $ 35,200,000
9% Convertible Junior Subordinated Debentures |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Conversion rate (in shares per $1,000 note) |  |  |  |  | 0.0765496 |
Principal amount of notes used in determining conversion rate |  | $ 1,000 |  |  | $ 1,000 |
Convertible debt, conversion price (in dollars per share) | $ / shares |  | $ 13.06 |  |  | $ 13.06 |
Stated interest rate |  | 9.00% |  |  | 9.00% |
Extinguishment of debt, amount |  |  |  |  | $ 74,900,000 |
Repurchases of convertible junior subordinated debentures |  |  |  |  | 102,000,000 |
Loss on debt extinguishment |  |  |  |  | $ 27,200,000 |
Reduction in potentially dilutive shares due to debt extinguishment | shares |  |  |  |  | 5.7 |
Senior Notes | 5.75% Senior Notes Due 2023 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate |  | 5.75% |  |  | 5.75% |
Senior Notes | 5.75% Senior Notes Due 2023 | Subsequent Event |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Redemption of senior notes | $ 248,400,000 |  |  |  |  |
Loss on debt extinguishment | $ 6,800,000 |  |  |  |  |
Senior Notes | 5.25% Senior Notes Due 2028 |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate |  | 5.25% |  |  | 5.25% |
Federal Home Loan Bank Advances (FHLB) |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Stated interest rate |  | 1.91% |  |  | 1.91% |
Loss on debt extinguishment |  |  | $ 1,300,000 |  |  |
Federal Home Loan Bank advance prepayment amount |  |  | $ 156,300,000 |  |  |

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