Note 9 - Business Segments (Tables)

3 Months Ended

Mar. 31, 2022

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, 2022:
Revenues from external customers:
United States (1)	$	116,109	$	535		$	6,557		$	123,201
Foreign (2)		46,416		14,093			—			60,509
Net revenue from external customers		162,525		14,628			6,557			183,710
Intersegment revenues (4)		—		20,903			—			—
Operating income (loss)		47,575		(1,575	)		(922	)		45,078
Segment assets at period end (3) (*)		4,093,759		140,957			179,473			4,414,189
* Including unconsolidated investments		112,522		—			—			112,522
Three Months Ended March 31, 2021:
Revenues from external customers:
United States (1)	$	98,976	$	1,853		$	12,721		$	113,550
Foreign (2)		46,012		6,790			—			52,802
Net revenue from external customers		144,988		8,643			12,721			166,352
Intersegment revenues (4)		—		25,334			—			—
Operating income (loss)		47,749		(1,211	)		3,351			49,889
Segment assets at period end (3) (*)		3,577,745		140,039			141,429			3,859,213
* Including unconsolidated investments		104,519		—			—			104,519

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

	Three Months Ended March 31,
	2022			2021
	(Dollars in thousands)
Revenues:
Total segment revenues	$	183,710		$	166,352
Intersegment revenues		20,903			25,334
Elimination of intersegment revenues		(20,903	)		(25,334	)
Total consolidated revenues	$	183,710		$	166,352
Operating income:
Operating income	$	45,078		$	49,889
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	)
Total consolidated income before income taxes and equity in income of investees	$	32,379		$	20,294