Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Revenues:
Revenue	$ 183,710	$ 166,352
Cost of revenues:
Cost of revenues	113,805	92,705
Gross profit	69,905	73,647
Operating expenses:
Research and development expenses	1,064	876
Selling and marketing expenses	4,365	4,276
General and administrative expenses	17,572	18,606
Write-off of Energy Storage projects and assets	1,826	0
Operating income	45,078	49,889
Other income (expense):
Interest income	342	263
Interest expense, net	(21,081)	(19,016)
Derivatives and foreign currency transaction gains (losses)	260	(16,866)
Income attributable to sale of tax benefits	7,705	6,355
Other non-operating income (expense), net	75	(331)
Income from operations before income tax and equity in earnings (losses) of investees	32,379	20,294
Income tax provision	(10,163)	(3,007)
Equity in earnings (losses) of investees, net	577	542
Net income	22,793	17,829
Net income attributable to noncontrolling interest	(4,363)	(2,570)
Net income attributable to the Company's stockholders	18,430	15,259
Comprehensive income:
Net income	22,793	17,829
Other comprehensive income (loss), net of related taxes:
Change in foreign currency translation adjustments	(1,156)	(1,826)
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	3,902	3,755
Change in unrealized gains or losses in respect of a cross currency swap derivative instrument that qualifies as a cash flow hedge	(1,905)	(2,798)
Change in unrealized gains or losses on marketable securities available-for-sale (net of related tax)	(101)	(20)
Other changes in comprehensive income	15	16
Total other comprehensive income (loss), net of related taxes:	755	(873)
Comprehensive income	23,548	16,956
Comprehensive income attributable to noncontrolling interest	(4,064)	(1,997)
Comprehensive income attributable to the Company's stockholders	$ 19,484	$ 14,959
Earnings per share attributable to the Company's stockholders:
Basic: (in dollars per share)	$ 0.33	$ 0.27
Diluted: (in dollars per share)	$ 0.33	$ 0.27
Weighted average number of shares used in computation of earnings per share attributable to the Company's stockholders:
Basic (in shares)	56,063	55,988
Diluted (in shares)	56,366	56,735
Electricity [Member]
Revenues:
Revenue	$ 162,525	$ 144,988
Cost of revenues:
Cost of revenues	94,521	79,851
Product [Member]
Revenues:
Revenue	14,628	8,643
Cost of revenues:
Cost of revenues	13,613	8,074
Energy Storage and Management Services [Member]
Revenues:
Revenue	6,557	12,721
Cost of revenues:
Cost of revenues	$ 5,671	$ 4,780