Note 2 - Revenue - Contract Balances (Details) - USD ($) $ in Thousands	Apr. 30, 2020	Jan. 31, 2020
Contract assets, short-term (in Prepaid expenses and other current assets, net)	$ 1,952	$ 1,595
Contract assets, long-term (in Other assets, net)	164	214
Total contract assets	2,116	1,809
Deferred revenue, short-term	102,302	118,413
Deferred revenue, long-term (in Other liabilities)	2,846	2,811
Total deferred revenue	105,148	121,224
Maintenance [Member]
Deferred revenue, short-term	58,416	69,650
Subscription and Circulation [Member]
Deferred revenue, short-term	41,266	45,702
Professional Services [Member]
Deferred revenue, short-term	2,483	2,705
License and Other [Member]
Deferred revenue, short-term	$ 137	$ 356