Components of Deferred Tax Assets Classified as Non-Current (Detail) - USD ($) $ in Thousands	Mar. 31, 2016	Mar. 31, 2015
Deferred tax assets:
Accounts receivable reserves	$ 548	$ 484
Inventory reserves	284	411
Accruals	42	67
Property, plant and equipment	504	522
Net operating loss and credit carry forwards	23	536
Total deferred tax assets	$ 1,401	$ 2,020