Note 5 - Stock-based Compensation - Stock-based Compensation Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2017	Jan. 31, 2016	Jan. 31, 2015
Allocated stock-based compensation expense	$ 7,323	$ 7,440	$ 4,993
Cost of Subscription [Member]
Allocated stock-based compensation expense	113	76	45
Cost of Maintenance and Other Revenue [Member]
Allocated stock-based compensation expense	299	271	152
Cost of Professional Services [Member]
Allocated stock-based compensation expense	848	739	492
Selling and Marketing Expense [Member]
Allocated stock-based compensation expense	1,200	1,377	790
Research and Development Expense [Member]
Allocated stock-based compensation expense	1,009	900	518
General and Administrative Expense [Member]
Allocated stock-based compensation expense	$ 3,854	$ 4,077	$ 2,996