Note 5 - Goodwill and Intangible Assets (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2016	Oct. 31, 2015	Oct. 31, 2016	Oct. 31, 2015
Goodwill, Impairment Loss			$ 0
Amortization of Intangible Assets	$ 165,000	$ 165,000	$ 496,000	$ 495,000