The following tables summarize MRV's Statements of Operations (in thousands):



Three months ended:	March 31, 2013			June 30, 2013			September 30, 2013			December 31, 2013
Revenue	$	38,905		$	38,175		$	38,385		$	50,736
Cost of goods sold	25,878			24,803			23,411			34,116
Gross profit	13,027			13,372			14,974			16,620
Operating expenses:
Product development and engineering	4,648			4,454			4,627			5,652
Selling, general and administrative	12,392			9,453			10,308			10,840
Total operating expenses	17,040			13,907			14,935			16,492
Operating income (loss)	(4,013		)	(535		)	39			128
Interest expense	(132		)	(241		)	(41		)	(112		)
Other income (loss), net	17			(102		)	(132		)	(190		)
Income (loss) from continuing operations before income taxes	(4,128		)	(878		)	(134		)	(174		)
Provision (benefit) for income taxes	306			115			12			1,075
Net income (loss) attributable to MRV	$	(4,434	)	$	(993	)	$	(146	)	$	(1,249	)
Net income (loss) attributable to MRV per share — basic and diluted (1)	$	(0.59	)	$	(0.13	)	(0.02		)	$	(0.17	)
Basic and diluted weighted average shares	7,568			7,585			7,522			7,443



Three months ended:	March 31, 2012			June 30, 2012			September 30, 2012			December 31, 2012
Revenue	$	33,415		$	37,626		$	34,666		$	45,954
Cost of goods sold	20,734			24,314			20,294			31,167
Gross profit	12,681			13,312			14,372			14,787
Operating expenses:
Product development and engineering	3,699			3,389			4,023			4,233
Selling, general and administrative	12,627			11,167			11,414			13,391
Impairment of Goodwill							1,055			1
Total operating expenses	16,326			14,556			16,492			17,625
Operating income (loss)	(3,645		)	(1,244		)	(2,120		)	(2,838		)
Interest expense	(208		)	(191		)	(52		)	(150		)
Gain from settlement of deferred consideration obligation	—			2,314			—			—
Other income (loss), net	162			(82		)	(17		)	(117		)
Income from continuing operations before income taxes	(3,691		)	797			(2,189		)	(3,105		)
Provision (benefit) for income taxes	(1,517		)	296			(869		)	1,077
Income (loss) from continuing operations	(2,174		)	501			(1,320		)	(4,182		)
Gain (loss) from discontinued operations	5,789			(630		)	(2,108		)	9,788
Net income (loss) attributable to MRV	3,615			(129		)	(3,428		)	5,606
Net income (loss) attributable to MRV per share — basic:
From continuing operations	$	(0.28	)	$	0.06		$	(0.17	)	$	(0.54	)
From discontinued operations	0.73			(0.08		)	(0.27		)	1.26
Net income (loss) attributable to MRV per share — basic (1)	$	0.46		$	(0.02	)	$	(0.44	)	$	0.72
Net income (loss) attributable to MRV per share — diluted:
From continuing operations	$	(0.28	)	$	0.06		$	(0.17	)	$	(0.54	)
From discontinued operations	0.73			(0.08		)	(0.27		)	1.26
Net income attributable to MRV per share — diluted (1)	$	0.46		$	(0.02	)	$	(0.44	)	$	0.72
Basic weighted average shares	7,887			7,887			7,766			7,760
Diluted weighted average shares	7,896			7,887			7,766			7,760

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(1)	Amounts may not add due to rounding.