Note 12 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2019	Apr. 30, 2018
Cost of subscription	$ 2,304	$ 2,106
Cost of Subscription [Member]
Cost of subscription	70	49
Cost of Maintenance and Other Revenue [Member]
Cost of subscription	121	92
Cost of Professional Services [Member]
Cost of subscription	322	226
Selling and Marketing Expense [Member]
Cost of subscription	380	402
Research and Development Expense [Member]
Cost of subscription	427	315
General and Administrative Expense [Member]
Cost of subscription	$ 984	$ 1,022