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Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

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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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Amount, after accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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Average amount borrowed under the credit facility during the period.

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The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

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Description of the conditions for borrowing under the credit facility including the nature of any restrictions.

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Period remaining on line of credit facility before it terminates, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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The effective interest rate during the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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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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Debt - Additional Information (Details) $ in Thousands					12 Months Ended
Debt - Additional Information (Details) $ in Thousands	Apr. 30, 2021 USD ($)	Jan. 20, 2021 USD ($)	Apr. 30, 2020 USD ($)	Jun. 17, 2019	Dec. 31, 2021 USD ($) shares	Dec. 31, 2020 USD ($) shares	Dec. 31, 2019 USD ($)	Mar. 31, 2020 shares	Jul. 17, 2019 USD ($)
Debt Instrument [Line Items]
Common stock issued for notes purchased \| shares					92,619,641	66,155,340		9,162,976
Amortization of debt issuance cost					$ 461	$ 0	$ 0
Gain (loss) on extinguishment of debt					790	$ (116)	$ 0
Barclays Bank PLC [Member] \| London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument [Line Items]
Initial margins	3.25%
Barclays Bank PLC [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Liquidity ratio amount, minimum limit					$ 125,000
Leverage ratio					3.75
Interest coverage ratio					1.5
Line of credit facility, covenant compliance					As of December 31, 2021, we were in full compliance with our financial condition covenant.
Revolving Line of Credit [Member]
Debt Instrument [Line Items]
Unamortized debt issuance cost					$ 1,600
Debt issuance costs					2,100
Revolving Line of Credit [Member] \| Western Alliance Bank [Member]
Debt Instrument [Line Items]
Principal amount									$ 1,000
Maturity period				2 years
Initial margins				5.50%
Line of credit, outstanding balance					$ 1,000
Revolving Line of Credit [Member] \| Barclays Bank PLC [Member]
Debt Instrument [Line Items]
Maturity period	3 years
Initial Commitment Fees	0.50%
Revolving Line of Credit [Member] \| Barclays Bank PLC [Member] \| Letter of Credit [Member]
Debt Instrument [Line Items]
Aggregate commitments	$ 100,000
Initial Commitment Fees	3.25%
Line of credit facility, covenant terms					The Credit Agreement includes the following financial condition covenants that we are required to satisfy: (i) maintain a minimum liquidity limit of $125 million for each quarter; (ii) maintain a 3.75 times leverage ratio; and (iii) maintain a 1.5 times interest coverage ratio. The leverage and interest coverage ratios will be triggered when we achieve $50 million in adjusted EBITDA over a trailing twelve months, or upon our election if we have achieved positive adjusted EBITDA over a trailing twelve months. Once the leverage and interest coverage ratios are triggered the minimum liquidity limit will not have a minimum limit. Minimum liquidity includes unrestricted cash plus the undrawn balance of the revolving credit facility. The minimum liquidity covenant was the only financial condition covenant we had to satisfy as of the period ended December 31, 2021
Credit facility revolver fees					$ 50,000
Paycheck Protection Program loan [Member] \| CARES Act [Member]
Debt Instrument [Line Items]
Maturity period			2 years
Initial margins			1.00%
Loans received			$ 800
Gain (loss) on extinguishment of debt		$ 800