Note 1 - Description of Business and Summary of Accounting Policies - Reconciliation of Adjustments to the Previously Reported Balance Sheet (Details) - USD ($) $ in Thousands	Mar. 31, 2014
Scenario, Previously Reported [Member]
Accounts receivable	$ 3,347
Inventories, net	4,876
Deferred tax assets	3,340
Total assets	30,310
Accounts payable	3,184
Total current liabilities	4,192
Total equity	20,847
Restatement Adjustment [Member]
Accounts receivable	(971)
Inventories, net	465
Deferred tax assets	173
Total assets	(333)
Accounts payable	(37)
Total current liabilities	(37)
Total equity	(296)
Accounts receivable	2,376
Inventories, net	5,341
Deferred tax assets	216
Total assets	29,977
Accounts payable	3,147
Total current liabilities	4,155
Total equity	$ 20,551