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	Mar. 31, 2016	Mar. 31, 2015
Deferred tax assets:
Accrued expenses	$ 537	$ 545
Deferred stock compensation	302	246
Bad debt and inventory reserves	29	26
Property and equipment		23
Total deferred tax assets	868	840
Deferred tax liabilities:
Property and equipment	5
Total net deferred taxes	$ 863	$ 840