Note 5 - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2016	Jul. 31, 2015	Jul. 31, 2016	Jul. 31, 2015
Net income (loss)	$ 128	$ (265)	$ 1,452	$ (576)
Basic net income (loss) per share:
Weighted-average shares outstanding-Basic (in shares)	14,644	14,644	14,644	14,659
Basic net income (loss) per share (in dollars per share)	$ 0.01	$ (0.02)	$ 0.10	$ (0.04)
Diluted net (loss) income per share:
Weighted-average shares outstanding-Basic (in shares)	14,644	14,644	14,644	14,659
Effect of potentially dilutive securities (in shares)
Weighted average shares outstanding - diluted (in shares)	14,644	14,644	14,644	14,659
Diluted net income (loss) per share (in dollars per share)	$ 0.01	$ (0.02)	$ 0.10	$ (0.04)