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Amount, after accumulated amortization, of debt discount.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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Convertible Notes Payable - Related Party - Net Carrying Value (Details) - USD ($)	Jun. 30, 2022	Jun. 13, 2022	Dec. 31, 2021	Jul. 06, 2021
Senior Notes
Debt Instrument [Line Items]
Aggregate carrying value	$ 5,581,000		$ 6,371,000
Yorkville Convertible Note
Debt Instrument [Line Items]
Principal-Installment	7,500,000	$ 7,500,000
Principal- Payment Premium	225,000
Unamortized debt discount	(294,000)
Unamortized debt issuance costs	(98,000)
Aggregate carrying value	7,333,000
2021 Convertible Notes without embedded derivative liability
Debt Instrument [Line Items]
Principal-Installment				$ 100,000,000
2021 Convertible Notes without embedded derivative liability \| Senior Notes
Debt Instrument [Line Items]
Principal-Installment	105,987,000		102,900,000
Unamortized debt discount	(26,876,000)		(28,321,000)
Unamortized debt issuance costs	(2,613,000)		(2,790,000)
Embedded conversion feature	707,000		12,359,000
Aggregate carrying value	$ 77,205,000		$ 84,148,000