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Note 8 - Business Segments (Tables) | 3 Months Ended
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Mar. 31, 2024
Notes Tables |
Schedule of Segment Reporting Information, by Segment [Table Text Block] |
|  | Electricity |  |  | Product |  |  | Energy Storage |  |  | Consolidated |
|  | (Dollars in thousands) |
Three Months Ended March 31, 2024: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues from external customers: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States (1) |  | $ | 143,816 |  |  | $ | 876 |  |  | $ | 8,081 |  |  | $ | 152,773 |
Foreign (2) |  |  | 47,437 |  |  |  | 23,956 |  |  |  | — |  |  |  | 71,393 |
Net revenue from external customers |  |  | 191,253 |  |  |  | 24,832 |  |  |  | 8,081 |  |  |  | 224,166 |
Intersegment revenues (4) |  |  | — |  |  |  | 20,597 |  |  |  | — |  |  |  | — |
Operating income (loss) |  |  | 52,681 |  |  |  | 842 |  |  |  | (940 | ) |  |  | 52,583 |
Segment assets at period end (3) (*) |  |  | 4,961,483 |  |  |  | 190,210 |  |  |  | 365,151 |  |  |  | 5,516,844 |
* Including unconsolidated investments |  |  | 127,386 |  |  |  | — |  |  |  | — |  |  |  | 127,386 |
Three Months Ended March 31, 2023: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Revenues from external customers: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
United States (1) |  | $ | 122,411 |  |  | $ | 1,441 |  |  | $ | 4,880 |  |  | $ | 128,732 |
Foreign (2) |  |  | 47,899 |  |  |  | 8,601 |  |  |  | — |  |  |  | 56,500 |
Net revenue from external customers |  |  | 170,310 |  |  |  | 10,042 |  |  |  | 4,880 |  |  |  | 185,232 |
Intersegment revenues (4) |  |  | — |  |  |  | 7,772 |  |  |  | — |  |  |  | — |
Operating income (loss) |  |  | 57,008 |  |  |  | (1,505 | ) |  |  | (2,337 | ) |  |  | 53,166 |
Segment assets at period end (3) (*) |  |  | 4,648,303 |  |  |  | 161,428 |  |  |  | 205,539 |  |  |  | 5,015,270 |
* Including unconsolidated investments |  |  | 119,185 |  |  |  | — |  |  |  | — |  |  |  | 119,185 |
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block] |
|  | Three Months Ended March 31, |
|  | 2024 |  |  | 2023 |
|  | (Dollars in thousands) |
Revenues: |  |  |  |  |  |  |  |
Total segment revenues |  | $ | 224,166 |  |  | $ | 185,232 |
Intersegment revenues |  |  | 20,597 |  |  |  | 7,772 |
Elimination of intersegment revenues |  |  | (20,597 | ) |  |  | (7,772 | )
Total consolidated revenues |  | $ | 224,166 |  |  | $ | 185,232 |
Operating income: |  |  |  |  |  |  |  |
Operating income |  | $ | 52,583 |  |  | $ | 53,166 |
Interest income |  |  | 1,839 |  |  |  | 1,851 |
Interest expense, net |  |  | (30,968 | ) |  |  | (23,631 | )
Derivatives and foreign currency transaction gains (losses) |  |  | (1,582 | ) |  |  | (1,937 | )
Income attributable to sale of tax benefits |  |  | 17,476 |  |  |  | 12,566 |
Other non-operating income, net |  |  | 26 |  |  |  | 60 |
Total consolidated income before income taxes and equity in income of investees |  | $ | 39,374 |  |  | $ | 42,075 |

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- Definition Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 25 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-25 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 30 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 + Details
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