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Note 11 - Income Taxes - Components of Net Deferred Tax Assets and Liabilities (Details) - USD ($)
$ in Thousands
Mar. 31, 2017
Mar. 31, 2016
Current deferred tax assets:    
Accrued employee-related expenses $ 242 $ 257
Allowances and reserves 132 217
Stock option deductible differences 898 606
Inventory 691 533
Currency translation adjustment 12
Net operating loss 110
Other 9 3
1,972 1,738
Property, plant and equipment (1,635) (1,599)
Goodwill and intangible assets (3,807) (4,335)
Currency translation adjustment (3)
Other (81) (5)
(5,526) (5,939)
Net deferred tax liability $ (3,554) $ (4,201)