Note 6 - Deferred Revenues - Summary of Deferred Revenues (Details) - USD ($) $ in Thousands	Jan. 31, 2018	Jan. 31, 2017
Deferred revenue	$ 116,693	$ 104,125
Long-term deferred revenue	2,156	2,353
Total deferred revenues	118,849	106,478
Software Service, Support and Maintenance Arrangement [Member]
Deferred revenue	80,811	78,923
Subscription Arrangement [Member]
Deferred revenue	31,034	20,389
Nonsoftware Service, Support and Maintenance Arrangement [Member]
Deferred revenue	3,523	2,550
Software License Arrangement [Member]
Deferred revenue	756	1,740
Deferred Other Revenue [Member]
Deferred revenue	$ 569	$ 523

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

The noncurrent portion of deferred revenue amount as of balance sheet date. Deferred revenue is a liability related to a revenue producing activity for which revenue has not yet been recognized, and is not expected to be recognized in the next twelve months. Generally, an entity records deferred revenue when it receives consideration from a customer before achieving certain criteria that must be met for revenue to be recognized in conformity with GAAP.

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