Supplemental Financial Information (Tables)

3 Months Ended

Jun. 30, 2012

Supplemental Financial Information

Schedule of inventories

	June 30,		March 31,
	2012		2012
	(In thousands)
Materials and supplies	$	1,515	$	1,513
Work in process	95		98
Finished goods	760		843
	$	2,370	$	2,454

Schedule of intangible assets

	June 30, 2012					March 31, 2012
	Gross Carrying Amount		Accumulated Amortization			Gross Carrying Amount		Accumulated Amortization
	(In thousands)
Technology	$	1,856	$	(995	)	$	1,856	$	(935	)
Customer contracts / relationships	750		(153		)	750		(122		)
Other	1,110		(288		)	1,110		(219		)
Capitalized software development costs	191		—			138		—
Total	$	3,907	$	(1,436	)	$	3,854	$	(1,276	)

Schedule of future estimated amortization expense

Year Ending March 31:
(In thousands)
Remainder of 2013	$	483
2014	691
2015	495
2016	423
2017	282
Thereafter	97
	$	2,471

Schedule of warranty reserve activity

	Three Months Ended
	June 30,
	2012			2011
	(In thousands)
Balance at beginning of period	$	231		$	279
(Reduction) addition charged to cost of sales	(6		)	44
Warranty claims	(28		)	(32		)
Balance at end of period	$	197		$	291

Schedule of instruments excluded in the computation of diluted income from continuing operations per share

	Three Months Ended
	June 30,
	2012	2011
	(In thousands, except per share amounts)
Denominator:
Weighted average common shares used in basic computation	33,809	34,365
Dilutive stock options	—	171
Dilutive restricted stock units	54	23
Dilutive warrants	—	—
Weighted average common shares used in diluted computation	33,863	34,559

Schedule of instruments excluded in the computation of diluted income from continuing operations per share

	Three Months Ended
	June 30,
	2012	2011
	(Shares in thousands)
Stock options	1,938	2,170
Warrants	15	15