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Note 9 - Business Segments (Tables)

9 Months Ended

Sep. 30, 2014

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

	Electricity		Product		Consolidated

	(Dollars in thousands)
Three Months Ended September 30, 2014:
Net revenues from external customers	$	102,506	$	37,736	$	140,242
Intersegment revenues		—		7,244		7,244
Operating income		32,411		11,377		43,788
Segment assets at period end *		2,083,715		88,198		2,171,913
* Including unconsolidated investments		1,339		—		1,339
Three Months Ended September 30, 2013:
Net revenues from external customers	$	88,994	$	41,755	$	130,749
Intersegment revenues		—		4,329		4,329
Operating income		20,732		9,065		29,797
Segment assets at period end *		2,048,021		120,314		2,168,335
* Including unconsolidated investments		5,419		—		5,419

Nine Months Ended September 30, 2014:
Net revenues from external customers	$	289,015	$	121,266	$	410,281
Intersegment revenues		—		43,580		43,580
Operating income		72,850		35,839		108,689
Segment assets at period end *		2,083,715		88,198		2,171,913
* Including unconsolidated investments		1,339		—		1,339
Nine Months Ended September 30, 2013:
Net revenues from external customers	$	245,005	$	157,329	$	402,334
Intersegment revenues		—		29,731		29,731
Operating income		42,057		33,286		75,343
Segment assets at period end *		2,048,021		120,314		2,168,335
* Including unconsolidated investments		5,419		—		5,419

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

	Three Months Ended September 30,						Nine Months Ended September 30,
	2014			2013			2014			2013

	(Dollars in thousands)						(Dollars in thousands)
Operating income	$	43,788		$	29,797		$	108,689		$	75,343
Interest income		35			742			236			870
Interest expense, net		(22,494	)		(18,459	)		(65,084	)		(51,826	)
Foreign currency translation and transaction gains (losses)		(2,946	)		1,258			(3,639	)		3,844
Income attributable to sale of tax benefits		5,487			5,027			18,334			14,342
Gain from sale of property, plant and equipment		—			—			7,628			—
Other non-operating income, net		243			137			649			1,583
Total income, before income taxes, discontinued operations and equity in income (losses) of investees	$	24,113		$	18,502		$	66,813		$	44,156

- Definition

Tabular disclosure of the profit or loss and total assets for each reportable segment. An entity discloses certain information on each reportable segment if the amounts (a) are included in the measure of segment profit or loss reviewed by the chief operating decision maker or (b) are otherwise regularly provided to the chief operating decision maker, even if not included in that measure of segment profit or loss.

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