Income Tax (Tables)

12 Months Ended

Mar. 31, 2013

Income Tax Disclosure [Abstract]

Provision (benefit) for income taxes

	Fiscal Year Ended March 31,
	2013			2012			2011
Current:
Federal taxes	$	30,382		$	36,109		$	28,979
State taxes	5,019			8,614			6,501
Foreign taxes	190			73			—
Total current taxes	35,591			44,796			35,480
Deferred:
Federal taxes	$	(8,469	)	$	(3,571	)	$	(2,168	)
State taxes	(742		)	(502		)	(502		)
Foreign taxes	(190		)	(73		)	—
Total deferred taxes	(9,401		)	(4,146		)	(2,670		)
Provision for income taxes	$	26,190		$	40,650		$	32,810

Provision for income taxes differ at the federal statutory rate

	Fiscal Year Ended March 31,
	2013		2012		2011
Current:
Federal income tax statutory rate	35.0	%	35.0	%	35.0	%
Increase (decrease) resulting from:
State income taxes, net of Federal benefit	4.0		4.5		4.1
Research and development tax credits	(2.1	)	(0.9	)	(1.0	)
Qualified production activities income deduction	(4.6	)	(3.0	)	(3.0	)
Impairment of goodwill	7.5		—		—
Other	(1.8	)	(0.6	)	(0.3	)
Effective income tax rate	38.0	%	35.0	%	34.8	%

Net deferred tax assets and liabilities in consolidated balance sheets

	March 31, 2013			March 31, 2012
Deferred tax assets:
Deferred revenue	$	11,483		$	8,618
Inventory valuation	224			113
Accrued compensation and benefits	3,898			3,788
Deferred compensation	1,615			1,455
State income taxes	17			255
Compensatory stock option expense	2,291			1,828
Allowance for doubtful accounts	7,182			4,235
Other	3,207			4,813
Total deferred tax assets	29,917			25,105
Deferred tax liabilities:
Accelerated depreciation	$	(1,876	)	$	(2,319	)
Capitalized software	(7,717		)	(7,797		)
Intangibles assets	(4,124		)	(7,307		)
Prepaid expense	(1,859		)	(2,979		)
Other	—			73
Total deferred tax liabilities	(15,576		)	(20,329		)
Deferred tax assets (liabilities), net	$	14,341		$	4,776

Reconciliation of beginning and ending amount of unrecognized tax benefits

Balance at March 31, 2011	$	672
Additions for prior year tax positions	26
Reductions for prior year tax positions	(285		)
Balance at March 31, 2012	$	413
Additions for current/prior year tax positions	455
Reductions for prior year tax positions	(135		)
Balance at March 31, 2013	$	733