Long-Term Debt - Convertible Senior Notes Due 2026 (Details)	3 Months Ended
Mar. 31, 2022 USD ($) $ / shares shares	Mar. 31, 2021 USD ($)
Debt Instrument [Line Items]
Interest expense	$ 5,307,000	$ 6,112,000
Amortization of debt issuance costs	$ 590,000	810,000
Convertible Senior Notes Maturing February 2026
Debt Instrument [Line Items]
Interest rate (as a percent)	6.75%
Maturity date	Feb. 15, 2026
Frequency of periodic payment	semi-annually
Initial conversion ratio	0.1433795
Aggregate number of shares \| shares	28,675,900
Initial conversion price per share (USD per share) \| $ / shares	$ 6.97
Increase in the conversion rate	0.0645207
Redemption price as a percentage of principal amount	100.00%
Effective interest rate (as a percent)	7.60%
Interest expense	$ 3,700,000	3,700,000
Coupon interest expense	3,400,000	3,400,000
Amortization of debt issuance costs	$ 300,000	$ 300,000
Convertible Senior Notes Maturing February 2026 \| Maximum
Debt Instrument [Line Items]
Percentage of closing price of common stock to conversion price	130.00%
Number of trading days	20
Number of consecutive trading days	30
Convertible Senior Notes Maturing February 2026 \| Minimum
Debt Instrument [Line Items]
Percentage of closing price of common stock to conversion price	97.00%
Number of trading days	5
Number of consecutive trading days	10

Amount of the cost of borrowed funds accounted for as coupon interest expense.

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

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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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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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

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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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Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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