Condensed Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Revenues:
Total revenues	$ 249,727	$ 211,784	$ 713,507	$ 648,913
Cost of revenues:
Total cost of revenues	185,690	152,922	519,648	449,855
Gross profit	64,037	58,862	193,859	199,058
Operating expenses:
Research and development expenses	1,284	1,816	5,265	5,110
Selling and marketing expenses	4,895	4,248	13,437	13,541
General and administrative expenses	20,174	22,973	57,869	60,536
Other operating income	(3,125)	(6,250)	(10,519)	(6,250)
Impairment of long-lived assets	0	323	0	1,280
Write-off of unsuccessful exploration and storage activities	377	77	1,144	1,456
Operating income	40,432	35,675	126,663	123,385
Other income (expense):
Interest income	1,626	2,051	4,868	6,494
Interest expense, net	(35,677)	(34,822)	(106,832)	(99,506)
Derivatives and foreign currency transaction gains (losses)	(891)	2,046	6,237	132
Income attributable to sale of tax benefits	14,356	19,760	48,178	53,034
Other non-operating income, net	124	22	422	122
Income from operations before income tax and equity in earnings of investees	19,970	24,732	79,536	83,661
Income tax (provision) benefit	4,283	1,193	13,544	4,518
Equity in earnings (losses) of investees	455	(1,624)	861	437
Net income	24,708	24,301	93,941	88,616
Net income attributable to noncontrolling interest	(571)	(2,219)	(1,396)	(5,704)
Net income attributable to the Company's stockholders	24,137	22,082	92,545	82,912
Comprehensive income:
Net income	24,708	24,301	93,941	88,616
Other comprehensive income (loss), net of related taxes:
Change in foreign currency translation adjustments	(2,578)	4,914	7,730	2,485
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of an unconsolidated investment that qualifies as a cash flow hedge	(263)	(1,863)	(1,373)	(924)
Other changes in comprehensive income	10	11	33	36
Total other comprehensive income (loss), net of related taxes:	(4,970)	(1,988)	1,364	(2,974)
Comprehensive income	19,738	22,313	95,305	85,642
Comprehensive income attributable to noncontrolling interest	(555)	(3,071)	(3,280)	(5,992)
Comprehensive income attributable to the Company's stockholders	$ 19,183	$ 19,242	$ 92,025	$ 79,650
Earnings per share attributable to the Company's stockholders:
Earnings per share, basic (US Dollar per share)	$ 0.40	$ 0.37	$ 1.53	$ 1.37
Earnings per share, diluted (US Dollar per share)	$ 0.39	$ 0.36	$ 1.51	$ 1.37
Weighted average number of shares used in computation of earnings per share attributable to the Company's stockholders:
Weighted average number of shares used in computation of basic earnings per share	60,749	60,480	60,666	60,439
Weighted average number of shares used in computation of diluted earnings per share	61,252	60,770	61,132	60,726
Cross-currency swap
Other comprehensive income (loss), net of related taxes:
Change in unrealized gains or losses in respect of a cross-currency swap / interest rate swap derivative instrument that qualifies as a cash flow hedge	$ (1,881)	$ (2,649)	$ (4,023)	$ (3,277)
Interest rate swap
Other comprehensive income (loss), net of related taxes:
Change in unrealized gains or losses in respect of a cross-currency swap / interest rate swap derivative instrument that qualifies as a cash flow hedge	(258)	(2,401)	(1,003)	(1,294)
Electricity
Revenues:
Total revenues	167,110	164,638	507,263	522,117
Cost of revenues:
Total cost of revenues	124,588	114,941	365,657	342,186
Product
Revenues:
Total revenues	62,247	37,357	153,628	100,018
Cost of revenues:
Total cost of revenues	48,766	30,166	116,568	83,982
Energy Storage
Revenues:
Total revenues	20,370	9,789	52,616	26,778
Cost of revenues:
Total cost of revenues	$ 12,336	$ 7,815	$ 37,423	$ 23,687