Note 2 - Revenue - Contract Balances (Details) - USD ($) $ in Thousands	Jan. 31, 2020	Jan. 31, 2019
Contract assets, short-term (in Prepaid expenses and other current assets, net)	$ 1,595	$ 2,058
Contract assets, long-term (in Other assets, net)	214
Total contract assets	1,809	2,058
Deferred revenue, short-term	118,413	115,253
Deferred revenue, long-term (in Other liabilities)	2,811	1,465
Total deferred revenue	121,224	116,718
Maintenance [Member]
Deferred revenue, short-term	69,650	77,037
Subscription and Circulation [Member]
Deferred revenue, short-term	45,702	34,020
Professional Services [Member]
Deferred revenue, short-term	2,705	2,146
License and Other [Member]
Deferred revenue, short-term	$ 356	$ 2,050