Income Taxes (Tables)

12 Months Ended

Mar. 31, 2014

Income Tax Disclosure [Abstract]

Schedule of deferred tax assets and liabilities

	March 31,
	2014			2013
Deferred tax assets:
Accrued expenses		679			608
Deferred stock compensation		248			244
Net operating loss carryforward		53			152
Bad debt and inventory reserves		35			31
Total deferred tax assets		1,015			1,035
Deferred tax liabilities:
Property and equipment		(18	)		(221	)
Total net deferred taxes	$	997		$	814

Schedule of components of the income tax provision

	Year Ended March 31,
	2014			2013			2012
Current taxes
Federal	$	9,689		$	9,588		$	9,138
State		921			913			870
Total current taxes		10,610			10,501			10,008
Deferred taxes
Federal		(167	)		(329	)		(270	)
State		(16	)		(31	)		(26	)
Total deferred taxes		(183	)		(360	)		(296	)
Total provision for income taxes	$	10,427		$	10,141		$	9,712

Schedule of reconciliation of income tax provision

	Year Ended March 31,
	2014			2013			2012
Income taxes at U.S. statutory rates	$	9,940		$	9,557		$	9,230
State income taxes, net of federal tax benefit		583			562			540
Permanent differences		(35	)		(74	)		(68	)
Other		(61	)		96			10
Total provision for income taxes	$	10,427		$	10,141		$	9,712