Note 12 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Allocated stock-based compensation expense	$ 3,188	$ 3,364	$ 5,492	$ 5,470
Cost of Subscription [Member]
Allocated stock-based compensation expense	72	68	142	117
Cost of Maintenance and Other Revenue [Member]
Allocated stock-based compensation expense	132	118	253	210
Cost of Professional Services [Member]
Allocated stock-based compensation expense	359	327	681	553
Selling and Marketing Expense [Member]
Allocated stock-based compensation expense	575	534	955	936
Research and Development Expense [Member]
Allocated stock-based compensation expense	441	413	868	728
General and Administrative Expense [Member]
Allocated stock-based compensation expense	$ 1,609	$ 1,904	$ 2,593	$ 2,926