Income Taxes - Tax effects of temporary differences that give rise to significant portions of deferred tax assets and deferred tax liabilities (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Mar. 31, 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