Note 10 - Acquisition - Assets Acquired and Liabilities Assumed (Details) $ in Thousands	Jul. 31, 2014 USD ($)
Assets acquired:
Cash	$ 8
Accounts receivable	15
Inventory	40
Prepaid expenses and other	12
Property and equipment	359
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets	2,627
Total assets acquired	3,061
Liabilities assumed:
Accounts payable	(97)
Accrued liabilities	(14)
Other current liabilities	(34)
Total liabilities assumed	(145)
Net assets acquired	2,916
Add: goodwill	55
Total consideration transferred	$ 2,971