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Note 9 - Business Segments (Tables)

6 Months Ended

Jun. 30, 2022

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

		Electricity				Product				Energy Storage				Consolidated
		(Dollars in thousands)
Three Months Ended June 30, 2022:
Revenues from external customers:
United States ⁽¹⁾		$	105,193			$	1,134			$	7,491			$	113,818
Foreign⁽²⁾			46,002				9,258				—				55,260
Net revenue from external customers			151,195				10,392				7,491				169,078
Intersegment revenues ⁽⁴⁾			—				22,097				—				—
Operating income (loss)			40,466				(2,276	)			417				38,607
Segment assets at period end ^{(3) (*)}			4,222,340				122,221				197,415				4,541,976
* Including unconsolidated investments			114,699				—				—				114,699

Three Months Ended June 30, 2021:
Revenues from external customers:
United States ⁽¹⁾		$	87,564			$	647			$	5,627			$	93,838
Foreign⁽²⁾			46,300				6,763				—				53,063
Net revenue from external customers			133,864				7,410				5,627				146,901
Intersegment revenues ⁽⁴⁾			—				51,038				—				—
Operating income (loss)			30,018				(427	)			(972	)			28,619
Segment assets at period end^{(3) (*)}			3,530,256				122,868				165,426				3,818,550
* Including unconsolidated investments			103,890				—				—				103,890

Six Months Ended June 30, 2022:
Revenues from external customers:
United States ⁽¹⁾		$	221,302			$	1,669			$	14,048			$	237,019
Foreign ⁽²⁾			92,418				23,351				—				115,769
Net revenue from external customers			313,720				25,020				14,048				352,788
Intersegment revenues ⁽⁴⁾			—				43,000				—				—
Operating income (loss)			88,041				(3,851	)			(505	)			83,685
Segment assets at period end⁽³⁾ (*)			4,222,340				122,221				197,415				4,541,976
* Including unconsolidated investments			114,699				—				—				114,699

Six Months Ended June 30, 2021:
Revenues from external customers:
United States ⁽¹⁾		$	186,540			$	2,500			$	18,348			$	207,388
Foreign ⁽²⁾			92,312				13,553				—				105,865
Net revenue from external customers			278,852				16,053				18,348				313,253
Intersegment revenues ⁽⁴⁾			—				76,372				—				—
Operating income (loss)			77,767				(1,638	)			2,379				78,508
Segment assets at period end ⁽³⁾ (*)			3,530,256				122,868				165,426				3,818,550
* Including unconsolidated investments			103,890				—				—				103,890

Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]

		Three Months Ended June 30,								Six Months Ended June 30,
		2022				2021				2022				2021
		(Dollars in thousands)								(Dollars in thousands)
Revenues:
Total segment revenues		$	169,078			$	146,901			$	352,788			$	313,253
Intersegment revenues			22,097				51,038				43,000				76,372
Elimination of intersegment revenues			(22,097	)			(51,038	)			(43,000	)			(76,372	)
Total consolidated revenues		$	169,078			$	146,901			$	352,788			$	313,253

Operating income:
Operating income		$	38,607			$	28,619			$	83,685			$	78,508
Interest income			179				808				521				1,071
Interest expense, net			(20,418	)			(18,626	)			(41,499	)			(37,642	)
Derivatives and foreign currency transaction gains (losses)			(3,998	)			658				(3,738	)			(16,208	)
Income attributable to sale of tax benefits			9,527				7,420				17,232				13,775
Other non-operating income (expense), net			(1,260	)			(21	)			(1,185	)			(352	)
Total consolidated income before income taxes and equity in income of investees		$	22,637			$	18,858			$	55,016			$	39,152