Note 2 - Revenue - Contract Balances (Details) - USD ($) $ in Thousands	Jan. 31, 2021	Jan. 31, 2020
Contract assets, short-term (in Prepaid expenses and other current assets, net)	$ 2,014	$ 1,595
Contract assets, long-term (in Other assets, net)	103	214
Total contract assets	2,117	1,809
Deferred revenue, short-term	125,724	118,413
Deferred revenue, long-term (in Other liabilities)	2,705	2,811
Total deferred revenue	128,429	121,224
Maintenance [Member]
Deferred revenue, short-term	66,833	69,650
Subscription and Circulation [Member]
Deferred revenue, short-term	55,873	45,702
Professional Services [Member]
Deferred revenue, short-term	2,649	2,705
License and Other [Member]
Deferred revenue, short-term	$ 369	$ 356