Supplemental Financial Information (Tables)

9 Months Ended

Dec. 31, 2012

Supplemental Financial Information

Schedule of inventories

	December 31,		March 31,
	2012		2012
	(In thousands)
Materials and supplies	$	1,600	$	1,513
Work in process	73		98
Finished goods	1,234		843
	$	2,907	$	2,454

Schedule of intangible assets

	December 31, 2012					March 31, 2012
	Gross					Gross
	Carrying		Accumulated			Carrying		Accumulated
	Amount		Amortization			Amount		Amortization
	(In thousands)
Technology	$	1,856	$	(1,117	)	$	1,856	$	(935	)
Customer contracts / relationships	750		(215		)	750		(122		)
Trade names and non-compete agreements	1,110		(426		)	1,110		(219		)
Capitalized software development costs	295		—			138		—
Total	$	4,011	$	(1,758	)	$	3,854	$	(1,276	)

Schedule of future estimated amortization expense

As of December 31, 2012, future estimated amortization expense is as follows:

Remainder of 2013	$	161
2014	725
2015	530
2016	458
2017	282
Thereafter	97
	$	2,253

Schedule of warranty reserve activity

	Nine Months Ended
	December 31,
	2012			2011
	(In thousands)
Balance at beginning of period	$	231		$	279
Addition charged to cost of sales	52			114
Warranty claims	(126		)	(110		)
Balance at end of period	$	157		$	283

Schedule of computation of basic and diluted income per share from continuing operations

	Three Months Ended		Nine Months Ended
	December 31,		December 31,
	2012	2011	2012	2011
	(In thousands)
Denominator:
Weighted average common shares used in basic per share computation	33,532	34,217	33,657	34,337
Dilutive stock options	66	54	43	98
Dilutive restricted stock units	41	—	58	8
Dilutive warrants	2	—	1	—
Weighted average common shares used in diluted per share computation	33,641	34,271	33,759	34,443

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

	Three Months Ended		Nine Months Ended
	December 31,		December 31,
	2012	2011	2012	2011
	(In thousands)
Stock options	733	2,110	1,155	2,144
Warrants	—	15	5	15