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Convertible Notes (Tables)

3 Months Ended

Mar. 31, 2023

Debt Disclosure [Abstract]

Schedule of key terms of convertible notes

Key terms of the Convertible Notes are as follows:


		2023 Notes				2021 Notes				2020 Notes
Principal outstanding			$130.0				$150.0				$60.0
Maturity date (unless earlier converted, repurchased or redeemed)			August 15, 2028				June 15, 2026				June 15, 2023
Interest rate			5.75%				3.25%				4.25%
Conversion price			$9.54				$11.04				$5.92
Conversion rate			104.8658				90.5797				168.9189
Redemption price			$12.40				$14.35				$7.70

Summary of the carrying value of the convertible notes

The following table provides a summary of the carrying value of the Convertible Notes at March 31, 2023 and December 31, 2022:


		March 31, 2023																December 31, 2022
		2023 Notes				2021 Notes				2020 Notes				Total				2021 Notes				2020 Notes				Total
Principal amount		$	130,000			$	150,000			$	60,000			$	340,000			$	150,000			$	175,000			$	325,000
Plus: Premium			—				—				250				250				—				250				250

Gross proceeds			130,000				150,000				60,250				340,250				150,000				175,250				325,250
Less: Unamortized issuance costs			(3,465)				(2,768)				(366)				(6,599)				(2,981)				(1,053)				(4,034)

Carrying amount			126,535			$	147,232			$	59,884			$	333,651			$	147,019			$	174,197			$	321,216

Effective interest rate (1)			6.25%				3.83%				5.18%				5.00%				3.83%				5.26%				4.60%

(1)

Includes amortization of the issuance costs and premium.