Unaudited quarterly operating results are summarized as follows (in thousands, except per share data):

	March 31			June 30			Sept 30			Dec. 31
2012
Net revenues	$	37,936		$	33,698		$	29,190		$	26,684
Gross profit		4,369			3,930			4,226			3,279
(Loss) income from continuing operations		(807	)		(1,009	)		(472	)		(4,262	)
(Loss) income from discontinued operations, net of taxes		(138	)		(60	)		(61	)		717
Net (loss) income		(945	)		(1,069	)		(533	)		(3,545	)
Net income attributable to noncontrolling interest		56			102			21			1

Net (loss) income attributable to Perma-Fix Environmental Services, Inc. common stockholders		(1,001	)		(1,171	)		(554	)		(3,546	)

Basic net (loss) income per common share attributable to
Perma-Fix Environmental Services, Inc. stockholders:
Continuing operations		(.02	)		(.02	)		(.01	)		(.07	)
Discontinued operations		—			—			—			.01
Net (loss) income per common share		(.02	)		(.02	)		(.01	)		(.06	)

Diluted net (loss) income per common share attributable to
Perma-Fix Environmental Services, Inc. stockholders:
Continued operations		(.02	)		(.02	)		(.01	)		(.07	)
Discontinued operations		—			—			—			.01
Net (loss) income per common share		(.02	)		(.02	)		(.01	)		(.06	)

2011
Net revenues	$	23,615		$	28,913		$	32,787		$	32,782
Gross profit		3,030			8,049			11,301			6,040
(Loss) income from continuing operations		(533	)		2,552			4,421			5,132
Income (loss) from discontinued operations, net of taxes		212			(32	)		(187	)		784
Gain (loss) on disposal of discontinued operations, net of taxes		—			—			1,777			(268	)
Net (loss) income		(321	)		2,520			6,011			5,648
Net income attributable to noncontrolling interest		—			—			—			22

Net (loss) income attributable to Perma-Fix Environmental Services, Inc. common stockholders		(321	)		2,520			6,011			5,626

Basic net (loss) income per common share attributable to
Perma-Fix Environmental Services, Inc. stockholders:
Continuing operations		(.01	)		.05			.08			.09
Discontinued operations		—			—			—			.01
Gain on disposal of discontinued operations, net of taxes		—			—			.03			—
Net (loss) income per common share		(.01	)		.05			.11			.10

Diluted net (loss) income per common share attributable to
Perma-Fix Environmental Services, Inc. stockholders:
Continued operations		(.01	)		.05			.08			.09
Discontinued operations		—			—			—			.01
Gain on disposal of discontinued operations, net of taxes		—			—			.03			—
Net (loss) income per common share		(.01	)		.05			.11			.10

Loss from continuing operations for the quarter ended December 31, 2012, included a charge to income tax expense of approximately $1,949,000 related to an uncertain tax position and a charge to income tax expense of approximately $1,375,000 attributed to the write-off of deferred tax assets that, based upon new information obtained by management, would not be realizable by the Company. See Note 12 – "Income Tax" for further discussion of these income tax expenses.

The sum of the quarterly earnings per common share amounts may not equal the annual amount reported because per share amounts are computed independently for each quarter and for the full year based on respective weighted-average common shares outstanding and other dilutive potential common shares.