Note 1 - Summary of Business and Significant Accounting Policies (Details Textual) - USD ($)	12 Months Ended
	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017	Feb. 01, 2019	Apr. 30, 2018	Feb. 01, 2018
Foreign Currency Transaction Gain (Loss), before Tax, Total	$ (200,000)	$ 2,500,000	$ 200,000
Depreciation, Depletion and Amortization, Total	4,700,000	4,600,000	4,300,000
Impairment of Long-Lived Assets Held-for-use	$ 0	0	0
Capitalized Software Amortization Period	3 years
Write-off of Fully Amortized Software Development Costs	$ 300,000
Capitalized Computer Software, Amortization	$ 600,000	800,000	1,000,000
Finite-Lived Intangible Asset, Useful Life	5 years
Income Tax Expense (Benefit), Continuing Operations, Foreign Tax Credit	$ 1,300,000
Advertising Expense	700,000	700,000	1,100,000
Research and Development Expense, Total	$ 53,993,000	47,661,000	$ 43,587,000
Class Common Stock to Class B Common Stock Cash or Stock Dividends Payout Ratio	120.00%
Retained Earnings (Accumulated Deficit), Ending Balance	$ (48,485,000)	(75,559,000)				$ (53,434,000)
Contract with Customer, Liability, Total	116,718,000	118,849,000				117,098,000
Contract with Customer, Asset, Net, Total	2,058,000					$ 1,000,000
Deferred Tax Assets, Net of Valuation Allowance, Total	$ 20,365,000	$ 8,617,000
Commission Expense [Member]
Capitalized Contract Cost, Amortization Period						5 years
Sales Agent Fees [Member]
Capitalized Contract Cost, Amortization Period						5 years
Cloud Environment Setup Costs [Member]
Capitalized Contract Cost, Amortization Period						5 years
Accounting Standards Update 2016-16 [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						$ 9,584,000
Deferred Tax Assets, Net of Valuation Allowance, Total					$ 9,600,000	9,600,000
Accounting Standards Update 2014-09 [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						12,541,000
Accounting Standards Update 2014-09 [Member] | Removal of Vendor Specific Objective Evidence [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						2,000,000
Contract with Customer, Liability, Total						(2,000,000)
Accounting Standards Update 2014-09 [Member] | Removal of Limitation on Contingent Revenue [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						800,000
Contract with Customer, Asset, Net, Total						800,000
Accounting Standards Update 2014-09 [Member] | Contracts Containing Future Option to Customer Reprsented Material Right Which Resulted in Deferred of Revenue [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						(300,000)
Contract with Customer, Liability, Total						300,000
Accounting Standards Update 2014-09 [Member] | Commission Expense Related to Contracts No Longer Expensed as Incurred [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						9,100,000
Other Assets, Total						9,100,000
Accounting Standards Update 2014-09 [Member] | Sales Agent Fees to Obtain Contracts No Longer Expensed as Incurred [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						1,000,000
Other Assets, Total						1,000,000
Accounting Standards Update 2014-09 [Member] | Cloud Environment Setup Costs Incurred to Fufill New Cloud Customer Contracts No Longer Expensed as Incurred [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						(1,500,000)
Accounting Standards Update 2014-09 [Member] | Adjustments for Tax Impact Related to Adoption of ASU 2014-09 [Member]
Retained Earnings (Accumulated Deficit), Ending Balance						(1,600,000)
Deferred Tax Assets, Net of Valuation Allowance, Total						$ (1,600,000)
Accounting Standards Update 2016-02 [Member] | Subsequent Event [Member] | Minimum [Member]
Operating Lease, Right-of-Use Asset				$ 11,000,000
Operating Lease, Liability, Total				18,000,000
Accounting Standards Update 2016-02 [Member] | Subsequent Event [Member] | Maximum [Member]
Operating Lease, Right-of-Use Asset				16,000,000
Operating Lease, Liability, Total				$ 27,000,000
Computer Equipment and Software [Member]
Property, Plant and Equipment, Useful Life	3 years
Furniture and Office Equipment [Member]
Property, Plant and Equipment, Useful Life	5 years
Building Improvements [Member]
Property, Plant and Equipment, Useful Life	10 years
Building [Member]
Property, Plant and Equipment, Useful Life	39 years
Leasehold Improvements [Member]
Property, Plant and Equipment, Useful Life	5 years
Customer Concentration Risk [Member] | Sales Revenue, Net [Member]
Concentration Risk, Percentage	10.00%	0.00%
Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage	0.00%	0.00%