NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)

12 Months Ended

Mar. 31, 2015

GENERAL

Schedule of activity in the allowance for doubtful accounts

(In thousands)	Balance at Beginning of Year		Charged to Costs and Expenses			Deductions or Write- offs Charged to Reserves		Balance at End of Year
Fiscal 2015	$	323	$	10		$	—	$	333
Fiscal 2014	$	351	$	(27	)	$	1	$	323
Fiscal 2013	$	255	$	344		$	248	$	351

Schedule of components of inventories

(In thousands)	2015		2014
Raw materials, completed subassemblies and spare parts	$	20,334	$	18,482
Work-in-process	17,853		13,199
Finished goods	2,796		1,254
Total	$	40,983	$	32,935

Schedule of activity in the reserve for excess or obsolete inventory

(In thousands)	Balance at Beginning of Year		Charged to Costs and Expenses		Deductions / Write- offs Charged to Reserves		Balance at End of Year
Fiscal 2015	$	10,865	$	664	$	3,235	$	8,294
Fiscal 2014	$	11,052	$	1,355	$	1,542	$	10,865
Fiscal 2013	$	6,210	$	5,061	$	219	$	11,052

Schedule of building, equipment and leasehold improvements

(In thousands)	Estimated Useful Lives	2015			2014
Building and leasehold improvements	Lesser of 25 years or remaining lease term	$	8,003		$	21,265
Equipment and tooling	5-10 years	5,871			5,517
Computer equipment and software	3-5 years	24,490			23,922
Furniture and fixtures	5-7 years	2,572			2,560
Demo and test equipment	2-5 years	8,596			8,331
Leased equipment	1-2 years or life of lease	63			63
Motor vehicles	3-5 years	74			72
Total		49,669			61,730
Less accumulated depreciation and amortization		(40,958		)	(48,761		)
Building, equipment and leasehold improvements, net		$	8,711		$	12,969

Schedule of accrued salaries and benefits

(In thousands)	2015		2014
Accrued payroll and payroll related taxes	$	1,145	$	2,154
Accrued incentive compensation	3,849		6,360
Accrued vacation	1,775		1,885
Accrued severance	—		406
Total accrued salaries and benefits	$	6,769	$	10,805

Schedule of other current liabilities

(In thousands)	2015		2014
Accounts payable and other accrued expenses	$	3,277	$	2,196
Accrued contract related costs	1,736		4,904
Accrued professional fees	433		361
Accrued sales commissions	290		1,831
Total other current liabilities	$	5,736	$	9,292

Schedule of calculation of basic and diluted earnings per share

(In thousands except per share amounts)	March 31, 2015		March 31, 2014			March 31, 2013
Earnings per Share — Basic:
Net income	$	979	$	15,117		$	17,454
Less: Distributed and undistributed earnings (losses) to unvested restricted stock units	2		(44		)	—
Distributed and undistributed earnings to common shareholders — Basic	$	981	$	15,073		$	17,454
Weighted average number of common shares outstanding — basic	7,723		7,846			8,394
Income per share — basic	$	0.13	$	1.92		$	2.08
Earnings per Share — Diluted:
Weighted average number of common shares outstanding — basic	7,723		7,846			8,394
Dilutive effect of stock-based awards	6		35			54
Weighted average number of common and potential common shares outstanding — diluted	7,729		7,881			8,448
Income per share — diluted	$	0.13	$	1.91		$	2.07

Schedule of common stock cash dividends declared

Date Declared	Dividend per common share
May 22, 2014	$	0.50
July 31, 2014	0.50
November 10, 2014	0.50
February 5, 2015	0.50
Fiscal year ended March 31, 2015	$	2.00

Summary of stock-based compensation costs in the statements of operations and comprehensive income

	Fiscal Year Ended
(In thousands)	March 31, 2015		March 31, 2014		March 31, 2013
Cost of sales and contracts	$	773	$	867	$	188
Selling, general and administrative	1,998		1,634		(4		)
Total share-based compensation expense before tax	$	2,771	$	2,501	$	184