Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) shares in Thousands, $ in Thousands		12 Months Ended
		Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Revenues:
Revenue	[1]	$ 734,159	$ 663,084	$ 705,342
Cost of revenues:
Cost of revenues		465,335	398,746	429,067
Gross profit		268,824	264,338	276,275
Operating expenses:
Research and development expenses		5,078	4,129	5,395
Selling and marketing expenses		16,193	15,199	17,384
General and administrative expenses		61,274	75,901	60,226
Impairment of long-lived assets		32,648	0	0
Write-off of unsuccessful exploration activities		828	0	0
Business interruption insurance income		0	(248)	(20,743)
Operating income		152,803	169,357	214,013
Other income (expense):
Interest income		3,417	2,124	1,717
Interest expense, net		(87,743)	(82,658)	(77,953)
Derivatives and foreign currency transaction gains (losses)		(6,044)	(14,720)	3,802
Income attributable to sale of tax benefits		33,885	29,582	25,720
Other non-operating income (expense), net		(709)	(134)	1,418
Income from operations before income tax and equity in earnings (losses) of investees		95,609	103,551	168,717
Income tax (provision) benefit		(14,742)	(24,850)	(67,003)
Equity in earnings (losses) of investees, net		(3,072)	(2,624)	92
Net income		77,795	76,077	101,806
Net income attributable to noncontrolling interest		(11,954)	(13,985)	(16,350)
Net income attributable to the Company's stockholders		65,841	62,092	85,456
Comprehensive income:
Net income		77,795	76,077	101,806
Other comprehensive income (loss), net of related taxes:
Change in foreign currency translation adjustments		(2,486)	(3,236)	3,813
Change in unrealized gains or losses in respect of the Company's share in derivatives instruments of unconsolidated investment that qualifies as a cash flow hedge		8,370	3,892	(3,975)
Change in unrealized gains or losses in respect of a cross currency swap derivative instrument that qualifies as a cash flow hedge (net of related tax of $464 and $817, respectively)		(1,825)	2,379	3,366
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax)		40	(40)	0
Other changes in comprehensive income		59	228	274
Comprehensive income		81,953	79,300	105,284
Comprehensive income attributable to noncontrolling interest		(11,421)	(12,779)	(17,794)
Comprehensive income attributable to the Company's stockholders		$ 70,532	$ 66,521	$ 87,490
Earnings per share attributable to the Company's stockholders:
Basic: (in dollars per share)		$ 1.17	$ 1.11	$ 1.66
Diluted: (in dollars per share)		$ 1.17	$ 1.10	$ 1.65
Weighted average number of shares used in computation of earnings per share attributable to the Company's stockholders:
Basic (in shares)		56,063	56,004	51,567
Diluted (in shares)		56,503	56,402	51,937
Electricity [Member]
Revenues:
Revenue		$ 631,727	$ 585,771	$ 541,393
Cost of revenues:
Cost of revenues		380,361	337,019	300,059
Product [Member]
Revenues:
Revenue		71,414	46,920	148,125
Cost of revenues:
Cost of revenues		60,479	41,374	114,948
Energy Storage and Management Services [Member]
Revenues:
Revenue		31,018	30,393	15,824
Cost of revenues:
Cost of revenues		$ 24,495	$ 20,353	$ 14,060

[1] Revenues as reported in the geographic area in which they originate.