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v3.24.1.1.u2

Note 1 - General and Basis of Presentation 1 (Details Textual) $ / shares in Units, $ in Thousands |  |  |  |  | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | ---
Mar. 28, 2024 USD ($) | Jan. 04, 2024 USD ($) | Jan. 02, 2024 USD ($) | Mar. 14, 2023 USD ($) $ / shares shares | Apr. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) $ / shares | Mar. 31, 2024 USD ($) $ / shares | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($) $ / shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares |  |  |  | $ 0.001 |  | $ 0.001 | $ 0.001 |  | $ 0.001
Proceeds from Issuance of Common Stock |  |  |  |  |  | $ 0 |  | $ 297,121 |
Energy Storage Projects and Assets, Write-off, Including Unsuccessful Exploration Activities and Storage Assets |  |  |  |  |  | 0 |  | 0 |
Cash, FDIC Insured Amount |  |  |  |  |  | 68,200 | $ 68,200 |  | $ 43,200
Cash, Uninsured Amount |  |  |  |  |  | 55,900 | 55,900 |  | 57,500
Accounts Receivable, after Allowance for Credit Loss, Current |  |  |  |  |  | 154,557 | 154,557 |  | $ 208,704
Income Related to Transferable Production Tax Credits |  |  |  |  |  | 4,400 |  | 1,800 |
Income Related to Transferable Investment Tax Credits |  |  |  |  |  | 11,500 |  | $ 1,600 |
Debt Instrument, Variable Interest Rate, Type [Extensible Enumeration] | Secured Overnight Financing Rate (SOFR) [Member] |  | Secured Overnight Financing Rate (SOFR) [Member] |  |  |  |  |  |
Kenya Power and Lighting Co LTD [Member] |  |  |  |  |  |  |  |  |
Accounts Receivable, Past Due |  |  |  |  |  | 40,000 | 40,000 |  |
Kenya Power and Lighting Co LTD [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Proceeds, Overdue Accounts Receivable |  |  |  |  | $ 12,400 |  |  |  |
ENEE [Member] |  |  |  |  |  |  |  |  |
Accounts Receivable, Past Due |  |  |  |  |  | $ 16,900 | 16,900 |  |
ENEE [Member] | Subsequent Event [Member] |  |  |  |  |  |  |  |  |
Proceeds, Overdue Accounts Receivable |  |  |  |  | $ 0 |  |  |  |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Primary Customers [Member] |  |  |  |  |  |  |  |  |
Concentration Risk, Percentage |  |  |  |  |  | 61.00% |  |  | 57.00%
Total Receivables [Member] | Customer Concentration Risk [Member] |  |  |  |  |  |  |  |  |
Financing Receivable, after Allowance for Credit Loss |  |  |  |  |  | $ 85,300 | 85,300 |  | $ 161,000
Non-US [Member] |  |  |  |  |  |  |  |  |
Accounts Receivable, after Allowance for Credit Loss, Current |  |  |  |  |  | 98,100 | 98,100 |  | 152,200
Goldman Sachs & Co. LLC [Member] |  |  |  |  |  |  |  |  |
Proceeds from Issuance of Common Stock |  |  |  | $ 341,700 |  |  |  |  |
Public Offering [Member] | Goldman Sachs & Co. LLC [Member] |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | shares |  |  |  | 3,600,000 |  |  |  |  |
Shares Issued, Price Per Share (in dollars per share) | $ / shares |  |  |  | $ 82.6 |  |  |  |  |
Over-Allotment Option [Member] | Goldman Sachs & Co. LLC [Member] |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues (in shares) | shares |  |  |  | 540,000 |  |  |  |  |
Mammoth Pacific [Member] | Project Subsidiaries [Member] |  |  |  |  |  |  |  |  |
Subsidiary, Ownership Percentage, Parent | 100.00% |  |  |  |  |  |  |  |
Hapoalim 2024 Loan Agreement [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 75,000 |  |  |  |  |  |
Debt Instrument Number of Quarterly Payments |  |  | 32 |  |  |  |  |  |
Debt Instrument, Periodic Payment, Principal |  |  | $ 2,300 |  |  |  |  |  |
Debt Instrument, Term (Year) |  |  | 8 years |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  | 6.60% |  |  |  |  |  |
Hapoalim 2024 Loan Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Debt to Adjusted EBITDA Ratio |  |  | 6.00% |  |  |  |  |  |
Debt Instrument, Covenant, Minimum Equity Capital, Amount |  |  | $ 750,000 |  |  |  |  |  |
Debt Instrument, Covenant, Equity Capital to Total Assets, Percent |  |  | 25.00% |  |  |  |  |  |
HSBC 2024 Loan Agreement [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount |  |  | $ 125,000 |  |  |  |  |  |
Debt Instrument, Periodic Payment, Principal |  |  | $ 12,500 |  |  |  |  |  |
Debt Instrument, Term (Year) |  |  | 4 years |  |  |  |  |  |
Debt Instrument, Number of Semi-annual Payments |  |  | 7 |  |  |  |  |  |
Debt Instrument, Periodic Payment Terms, Final Princiapl Payment to be Paid |  |  | $ 37,500 |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate |  |  | 2.25% |  |  |  |  |  |
HSBC 2024 Loan Agreement [Member] | Interest Rate Swap [Member] |  |  |  |  |  |  |  |  |
Derivative, Basis Spread on Variable Rate |  |  | 3.90% |  |  |  |  |  |
HSBC 2024 Loan Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Covenant, Debt to Adjusted EBITDA Ratio |  |  | 6.00% |  |  |  |  |  |
Debt Instrument, Covenant, Minimum Equity Capital, Amount |  |  | $ 750,000 |  |  |  |  |  |
Debt Instrument, Covenant, Equity Capital to Total Assets, Percent |  |  | 25.00% |  |  |  |  |  |
Mammoth Senior Secured Notes [Member] | Mammoth Pacific [Member] |  |  |  |  |  |  |  |  |
Debt Instrument, Face Amount | $ 135,100 |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage | 6.73% |  |  |  |  |  |  |  |
Debt Instrument, Number of Semi-annual Payments | 46 |  |  |  |  |  |  |  |
Debt Instrument, Basis Spread on Variable Rate | 1.25% |  |  |  |  |  |  |  |
Debt Instrument, Floating Rate Notes to be Issued | $ 9,000 |  |  |  |  |  |  |  |
Debt Instrument, Commitment Fee, Percentage | 0.50% |  |  |  |  |  |  |  |
Purchase Agreement With Enel Green Power North America [Member] |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Gross |  | $ 274,600 |  |  |  |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 100.00% |  |  |  |  |  |  |
Purchase Agreement With Enel Green Power North America [Member] | Electricity Segment [Member] |  |  |  |  |  |  |  |  |
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  | 9,400 |  |
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual |  |  |  |  |  |  | $ 3,300 |  |
Purchase Agreement With Enel Green Power North America [Member] | General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |
Business Combination, Acquisition Related Costs |  |  |  |  |  | $ 1,300 |  |  | $ 1,100

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