Note 11 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2020	Apr. 30, 2019
Allocated stock-based compensation expense	$ 2,405	$ 2,304
Cost of Subscription [Member]
Allocated stock-based compensation expense	107	70
Cost of Maintenance and Other Revenue [Member]
Allocated stock-based compensation expense	109	121
Cost of Professional Services [Member]
Allocated stock-based compensation expense	337	322
Selling and Marketing Expense [Member]
Allocated stock-based compensation expense	508	380
Research and Development Expense [Member]
Allocated stock-based compensation expense	451	427
General and Administrative Expense [Member]
Allocated stock-based compensation expense	$ 893	$ 984