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Ratio applied to the conversion of debt instrument into equity with equity shares divided by debt principal amount.

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

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Financing Agreements - Convertible Senior Notes (Details)	Jun. 03, 2019 USD ($) $ / shares	Mar. 31, 2022	Apr. 11, 2012
6.25% Convertible Senior Notes \| Convertible Debt
Debt Instrument [Line Items]
Proceeds from issuance of Series C Preferred Stock	$ 230,000,000
Proceed from debt net of offering expenses and underwriting discount	$ 223,300,000
Stated interest rate	6.25%	6.25%
Conversion ratio	31.4346
Debt instrument, face amount	$ 1,000
Conversion price (in dollars per share) \| $ / shares	$ 31.81
Effective interest rate	6.94%
Additional Convertible Senior Notes \| Convertible Debt
Debt Instrument [Line Items]
Proceeds from issuance of Series C Preferred Stock	$ 30,000,000
8.00% Senior Notes \| Senior Notes
Debt Instrument [Line Items]
Stated interest rate			8.00%
Effective interest rate			8.31%