INCOME TAXES (Tables)

12 Months Ended

Mar. 31, 2013

INCOME TAXES

Schedule of components of provision (benefit) for income taxes

(In thousands)	2013			2012			2011
Current:
Federal	$	11,339		$	9,082		$	24,080
State	595			197			636
Foreign	22			7			22
	11,956			9,286			24,738
Deferred:
Federal	(2,743		)	1,610			(2,354		)
State	(375		)	212			(640		)
Change in valuation allowance	154			(72		)	314
	(2,964		)	1,750			(2,680		)
Provision for income taxes	$	8,992		$	11,036		$	22,058

Schedule of the difference between the total expected provision for income taxes computed by applying the statutory federal income tax rate to income before provision for income taxes and the recorded provision for income taxes

(In thousands)	2013			2012			2011
Provision for income taxes at statutory rate	$	9,253		$	11,360		$	22,706
State tax provision (benefit) net of federal effect	143			265			(2		)
Stock based compensation	(60		)	107			616
Research tax credits	(589		)	(289		)	(432		)
Qualifying manufacturing credits	(154		)	(315		)	(1,346		)
Change in valuation allowance	154			(72		)	314
Other	245			(20		)	202
Provision for income taxes	$	8,992		$	11,036		$	22,058

Schedule of the significant components of the net deferred tax assets

	March 31, 2013					March 31, 2012
(In thousands)	Current		Non-current			Current		Non-current
Deferred tax assets (liabilities):
Accounts receivable and unbilled costs and fees	$	—	$	125		$	—	$	91
Inventory	248		3,935			219		2,199
Deferred revenue	—		1,778			—		1,192
Accrued vacation	558		—			668		—
Accrued warranty costs	141		—			126		—
Depreciation	—		(495		)	—		(922		)
Unearned compensation	1,738		2,573			1,836		2,577
State credit carryforwards	—		944			—		1,098
Other	470		409			480		37
Deferred income tax assets	3,155		9,269			3,329		6,272
Valuation allowance	—		(944		)	—		(1,098		)
Net deferred income taxes	$	3,155	$	8,325		$	3,329	$	5,174