QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

12 Months Ended

Dec. 31, 2012

QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

NOTE 24 — QUARTERLY FINANCIAL INFORMATION (UNAUDITED)

	Three Months Ended
	Mar. 31, 2011			June 30, 2011			Sept. 30, 2011			Dec. 31, 2011			Mar. 31, 2012			June 30, 2012			Sept. 30, 2012			Dec. 31, 2012
	(Dollars in thousands, except per share amounts)
Revenues:
Electricity	$	78,268		$	81,190		$	86,815		$	77,576		$	82,247		$	85,011		$	81,452		$	78,819
Product		19,552			23,424			24,026			46,158			50,105			44,826			54,685			37,263
Total revenues		97,820			104,614			110,841			123,734			132,352			129,837			136,137			116,082
Cost of revenues:
Electricity		65,937			62,212			57,941			57,947			57,931			57,953			61,466			67,284
Product		16,890			9,249			17,137			32,796			34,627			31,818			42,130			26,771
Total cost of revenues		82,827			71,461			75,078			90,743			92,558			89,771			103,596			94,055
Gross margin		14,993			33,153			35,763			32,991			39,794			40,066			32,541			22,027
Operating expenses:
Research and development expenses		2,207			2,575			2,346			1,673			1,048			1,464			1,436			2,160
Selling and marketing expenses		2,660			3,725			2,940			6,882			4,922			4,666			3,445			3,089
General and administrative expenses		7,007			7,479			6,269			7,130			7,314			6,793			6,208			7,952
Impairment charges		—			—			—			—			—			—			7,264			229,113
Write-off of unsuccessful exploration activities		—			—			—			—			768			1,151			—			720
Operating income (loss)		3,119			19,374			24,208			17,306			25,742			25,992			14,188			(221,007	)
Other income (expense):
Interest income		135			716			438			138			388			336			280			197
Interest expense, net		(13,080	)		(17,442	)		(23,909	)		(15,028	)		(14,878	)		(14,263	)		(15,400	)		(19,528	)
Foreign currency translation and transaction gains (losses)		517			596			(2,659	)		196			14			(1,756	)		615			1,369
Impairment of auction rate securities		—			—			—			—			—			—			—			—
Income attributable to sale of tax benefits		2,139			3,141			2,344			3,850			2,517			2,589			2,311			2,710
Other non-operating income (expense), net		(797	)		915			347			206			(161	)		290			215			246
Income (loss), before income taxes and equity in income (losses) of investees		(7,967	)		7,300			769			6,668			13,622			13,188			2,209			(236,013	)
Income tax benefit (provision)		(586	)		1,007			305			(49,261	)		(5,457	)		(4,309	)		(1,479	)		14,745
Equity in losses of investees		(412	)		(69	)		(71	)		(407	)		(140	)		(157	)		(1,245	)		(980	)
Net income (loss)		(8,965	)		8,238			1,003			(43,000	)		8,025			8,722			(515	)		(222,248	)
Net income attributable to noncontrolling interest		(10	)		(105	)		(137	)		(80	)		(130	)		(81	)		(67	)		(136	)
Net income (loss) attributable to the Company’s stockholders	$	(8,975	)	$	8,133		$	866		$	(43,080	)	$	7,895		$	8,641		$	(582	)	$	(222,384	)
Earnings (loss) per share attributable to the Company’s stockholders — basic and diluted	$	(0.20	)	$	0.18		$	0.02		$	(0.95	)	$	0.17		$	0.19		$	(0.01	)	$	(4.89	)
Weighted average number of shares used in computation of earnings (loss) per share attributable to the Company’s stockholders:
Basic		45,431			45,431			45,431			45,431			45,431			45,431			45,431			45,431
Diluted		45,431			45,443			45,440			45,431			45,437			45,438			45,431			45,431