Income Taxes (Tables)

12 Months Ended

Mar. 31, 2017

Income Tax Disclosure [Abstract]

Schedule of deferred tax assets and liabilities

	March 31,
	2017			2016
Deferred tax assets:
Accrued expenses	$	474		$	537
Deferred stock compensation		334			302
Bad debt and inventory reserves		29			29
Total deferred tax assets		837			868
Deferred tax liabilities:
Property and equipment		1,925			5
Total net deferred taxes	$	(1,088	)	$	863

Schedule of components of the income tax provision

	Year Ended March 31,
	2017		2016			2015
Current taxes
Federal	$	11,095	$	10,982		$	9,303
State		1,059		1,041			885
Total current taxes		12,154		12,023			10,188
Deferred taxes
Federal		1,781		(21	)		143
State		170		(2	)		14
Total deferred taxes		1,951		(23	)		157
Total provision for income taxes	$	14,105	$	12,000		$	10,345

Schedule of reconciliation of income tax provision

	Year Ended March 31,
	2017			2016			2015
Income taxes at U.S. statutory rates	$	13,274		$	11,399		$	9,729
State income taxes, net of federal tax benefit		858			675			589
Permanent differences		1			(23	)		(29	)
Other		(28	)		(51	)		56
Total provision for income taxes	$	14,105		$	12,000		$	10,345