Note 1 - Basis of Presentation and Recent Accounting Pronouncements - Effects of Adopting Topic 606 (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
		Apr. 30, 2018	Apr. 30, 2017	Feb. 01, 2018	Jan. 31, 2018	Jan. 31, 2017
Cash and Cash Equivalents, at Carrying Value, Ending Balance		$ 144,389	$ 153,348	$ 147,023	$ 147,023	$ 145,082
Accounts receivable, net		56,909		83,518	83,518
Other current assets		23,538		19,869	15,856
Total current assets		224,836		250,410	246,397
Property and equipment, net		30,184		30,408	30,408
Capitalized software costs, net		1,050		990	990
Goodwill		10,974		11,023	11,023
Deferred tax assets, net				15,885	7,944
Other assets, net		11,147		11,476	3,055
Total assets		291,248		320,192	299,817
Current portion of long-term debt		471		466	466
Accounts payable		9,192		14,818	14,818
Deferred revenue		103,369		115,454	116,693
Other current liabilities		34,830		43,460	43,460
Total current liabilities		147,862		174,198	175,437
Long-term debt		13,194		13,313	13,313
Other liabilities		4,883		4,928	5,439
Additional paid-in capital		196,058		200,456	200,456
Treasury stock		(10,035)		(12,461)	(12,461)
Retained Earnings (Accumulated Deficit), Ending Balance		(53,396)		(53,434)	(75,559)
Accumulated other comprehensive loss		(7,338)		(6,828)	(6,828)
Total stockholders’ equity		125,309		127,753	105,628
Total liabilities and stockholders’ equity		291,248		320,192	299,817
Cash and equivalents		144,389	153,348	147,023	147,023	$ 145,082
Accounts receivable, net		56,909		83,518	83,518
Other current assets		23,538		19,869	15,856
Total current assets		224,836		250,410	246,397
Property and equipment, net		30,184		30,408	30,408
Capitalized software costs, net		1,050		990	990
Goodwill		10,974		11,023	11,023
Deferred tax assets, net		13,057			7,944
Other assets, net		11,147		11,476	3,055
Total assets		291,248		320,192	299,817
Current portion of long-term debt		471		466	466
Accounts payable		9,192		14,818	14,818
Deferred revenue		103,369		115,454	116,693
Other current liabilities		34,830		43,460	43,460
Total current liabilities		147,862		174,198	175,437
Long-term debt		13,194		13,313	13,313
Other liabilities		4,883		4,928	5,439
Additional paid-in capital		196,058		200,456	200,456
Accumulated deficit		(53,396)		(53,434)	(75,559)
Accumulated other comprehensive loss		(7,338)		(6,828)	(6,828)
Total stockholders’ equity		125,309		127,753	105,628
Total liabilities and stockholders’ equity		291,248		320,192	299,817
Revenues		86,190	71,382
Costs of revenues		41,067	34,866
Gross profit		45,123	36,516
Sales and marketing		19,946	17,587
Research and development		14,006	11,532
General and administrative		9,362	8,593
Total operating expenses		43,314	37,875
Operating income		1,809	(1,359)
Interest income		(524)	(168)
Interest expense		157	156
Other (income) expense, net		(404)	604
Total other (income) expense, net		(771)	592
Income before income taxes		2,580	(1,951)
Income tax expense		1,183	620
Net (loss) income		1,397	(2,571)
Amortization of deferred costs		1,004
Net change in valuation allowance		1,416	1,107
Other assets		(4,454)	171
Deferred revenue		(11,020)	(7,623)
Common Class A [Member]
Common stock value		16		16	16
Common stock - Class A		16		16	16
Net (loss) income		$ 1,196	$ (2,199)
Basic net (loss) income per share (in dollars per share)		$ 0.07	$ (0.14)
Diluted net (loss) income per share (in dollars per share)		$ 0.07	$ (0.14)
Common Class B [Member]
Common stock value		$ 4		4	4
Common stock - Class A		4		4	4
Net (loss) income		$ 201	$ (372)
Basic net (loss) income per share (in dollars per share)		$ 0.06	$ (0.12)
Diluted net (loss) income per share (in dollars per share)		$ 0.06	$ (0.12)
Subscription and Circulation [Member]
Deferred revenue		$ 28,483			31,034
Deferred revenue		28,483			31,034
Revenues		21,511	$ 15,343
Costs of revenues		8,228	7,720
License [Member]
Deferred revenue		21			756
Deferred revenue		21			756
Revenues		6,266	5,265
Costs of revenues		664	685
Maintenance [Member]
Deferred revenue		72,141			80,811
Deferred revenue		72,141			80,811
Revenues		31,483	31,906
Costs of revenues		7,865	7,694
Professional Services [Member]
Deferred revenue		2,297			3,523
Deferred revenue		2,297			$ 3,523
Revenues		26,930	18,868
Costs of revenues		24,310	$ 18,767
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance		144,389
Accounts receivable, net		56,909
Other current assets		19,880
Total current assets		221,178
Property and equipment, net		30,184
Capitalized software costs, net		1,050
Goodwill		10,974
Other assets, net		3,097
Total assets		280,534
Current portion of long-term debt		471
Accounts payable		9,192
Deferred revenue		106,753
Other current liabilities		34,830
Total current liabilities		151,246
Long-term debt		13,194
Other liabilities		5,977
Additional paid-in capital		196,058
Treasury stock		(10,035)
Retained Earnings (Accumulated Deficit), Ending Balance		(68,588)
Accumulated other comprehensive loss		(7,338)
Total stockholders’ equity		110,117
Total liabilities and stockholders’ equity		280,534
Cash and equivalents		144,389
Accounts receivable, net		56,909
Other current assets		19,880
Total current assets		221,178
Property and equipment, net		30,184
Capitalized software costs, net		1,050
Goodwill		10,974
Deferred tax assets, net		14,051
Other assets, net		3,097
Total assets		280,534
Current portion of long-term debt		471
Accounts payable		9,192
Deferred revenue		106,753
Other current liabilities		34,830
Total current liabilities		151,246
Long-term debt		13,194
Other liabilities		5,977
Additional paid-in capital		196,058
Accumulated deficit		(68,588)
Accumulated other comprehensive loss		(7,338)
Total stockholders’ equity		110,117
Total liabilities and stockholders’ equity		280,534
Revenues		83,037
Costs of revenues		41,077
Gross profit		41,960
Sales and marketing		19,684
Research and development		13,947
General and administrative		9,362
Total operating expenses		42,993
Operating income		(1,033)
Interest income		(524)
Interest expense		157
Other (income) expense, net		(404)
Total other (income) expense, net		(771)
Income before income taxes		(262)
Income tax expense		992
Net (loss) income		(1,254)
Amortization of deferred costs
Net change in valuation allowance		2,064
Other assets		(4,175)
Deferred revenue		(8,292)
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Common Class A [Member]
Common stock value		16
Common stock - Class A		$ 16
Basic net (loss) income per share (in dollars per share)		$ (0.07)
Diluted net (loss) income per share (in dollars per share)		$ (0.07)
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Common Class B [Member]
Common stock value		$ 4
Common stock - Class A		$ 4
Basic net (loss) income per share (in dollars per share)		$ (0.06)
Diluted net (loss) income per share (in dollars per share)		$ (0.06)
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Subscription and Circulation [Member]
Revenues		$ 21,205
Costs of revenues		8,238
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | License [Member]
Revenues		5,096
Costs of revenues		664
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Maintenance [Member]
Revenues		31,556
Costs of revenues		7,865
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Professional Services [Member]
Revenues		25,180
Costs of revenues		24,310
Accounting Standards Update 2014-09 [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Accounts receivable, net
Other current assets				4,013
Total current assets				4,013
Property and equipment, net
Capitalized software costs, net
Goodwill
Deferred tax assets, net				(1,643)
Other assets, net				8,421
Total assets				10,791
Current portion of long-term debt
Accounts payable
Deferred revenue				(1,239)
Other current liabilities
Total current liabilities				(1,239)
Long-term debt
Other liabilities				(511)
Additional paid-in capital
Treasury stock
Retained Earnings (Accumulated Deficit), Ending Balance				12,541
Accumulated other comprehensive loss
Total stockholders’ equity				12,541
Total liabilities and stockholders’ equity				10,791
Cash and equivalents
Accounts receivable, net
Other current assets				4,013
Total current assets				4,013
Property and equipment, net
Capitalized software costs, net
Goodwill
Other assets, net				8,421
Total assets				10,791
Current portion of long-term debt
Accounts payable
Deferred revenue				(1,239)
Other current liabilities
Total current liabilities				(1,239)
Long-term debt
Other liabilities				(511)
Additional paid-in capital
Accumulated deficit				12,541
Accumulated other comprehensive loss
Total stockholders’ equity				12,541
Total liabilities and stockholders’ equity				10,791
Accounting Standards Update 2014-09 [Member] | Common Class A [Member]
Common stock value
Common stock - Class A
Accounting Standards Update 2014-09 [Member] | Common Class B [Member]
Common stock value
Common stock - Class A
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Accounts receivable, net
Other current assets		(3,658)
Total current assets		(3,658)
Property and equipment, net
Capitalized software costs, net
Goodwill
Other assets, net		(8,050)
Total assets		(10,714)
Current portion of long-term debt
Accounts payable
Deferred revenue		3,384
Other current liabilities
Total current liabilities		3,384
Long-term debt
Other liabilities		1,094
Additional paid-in capital
Treasury stock
Retained Earnings (Accumulated Deficit), Ending Balance		(15,192)
Accumulated other comprehensive loss
Total stockholders’ equity		(15,192)
Total liabilities and stockholders’ equity		(10,714)
Cash and equivalents
Accounts receivable, net
Other current assets		(3,658)
Total current assets		(3,658)
Property and equipment, net
Capitalized software costs, net
Goodwill
Deferred tax assets, net		994
Other assets, net		(8,050)
Total assets		(10,714)
Current portion of long-term debt
Accounts payable
Deferred revenue		3,384
Other current liabilities
Total current liabilities		3,384
Long-term debt
Other liabilities		1,094
Additional paid-in capital
Accumulated deficit		(15,192)
Accumulated other comprehensive loss
Total stockholders’ equity		(15,192)
Total liabilities and stockholders’ equity		(10,714)
Revenues		(3,153)
Costs of revenues		10
Gross profit		(3,163)
Sales and marketing		(262)
Research and development		(59)
General and administrative
Total operating expenses		(321)
Operating income		(2,842)
Interest income
Interest expense
Other (income) expense, net
Total other (income) expense, net
Income before income taxes		(2,842)
Income tax expense		(191)
Net (loss) income		(2,651)
Amortization of deferred costs		(1,004)
Net change in valuation allowance		648
Other assets		279
Deferred revenue		2,728
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Common Class A [Member]
Common stock value
Common stock - Class A
Basic net (loss) income per share (in dollars per share)		$ (0.14)
Diluted net (loss) income per share (in dollars per share)		$ (0.14)
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Common Class B [Member]
Common stock value
Common stock - Class A
Basic net (loss) income per share (in dollars per share)		$ (0.12)
Diluted net (loss) income per share (in dollars per share)		$ (0.12)
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Subscription and Circulation [Member]
Revenues		$ (306)
Costs of revenues		10
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | License [Member]
Revenues		(1,170)
Costs of revenues
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Maintenance [Member]
Revenues		73
Costs of revenues
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Professional Services [Member]
Revenues		(1,750)
Costs of revenues
Accounting Standards Update 2016-16 [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance	[1]
Accounts receivable, net	[1]
Other current assets	[1]
Total current assets	[1]
Property and equipment, net	[1]
Capitalized software costs, net	[1]
Goodwill	[1]
Deferred tax assets, net	[1]			9,584
Other assets, net	[1]
Total assets	[1]			9,584
Current portion of long-term debt	[1]
Accounts payable	[1]
Deferred revenue	[1]
Other current liabilities	[1]
Total current liabilities	[1]
Long-term debt	[1]
Other liabilities	[1]
Additional paid-in capital	[1]
Treasury stock	[1]
Retained Earnings (Accumulated Deficit), Ending Balance				9,584
Accumulated other comprehensive loss	[1]
Total stockholders’ equity	[1]			9,584
Total liabilities and stockholders’ equity	[1]			9,584
Cash and equivalents	[1]
Accounts receivable, net	[1]
Other current assets	[1]
Total current assets	[1]
Property and equipment, net	[1]
Capitalized software costs, net	[1]
Goodwill	[1]
Other assets, net	[1]
Total assets	[1]			9,584
Current portion of long-term debt	[1]
Accounts payable	[1]
Deferred revenue	[1]
Other current liabilities	[1]
Total current liabilities	[1]
Long-term debt	[1]
Other liabilities	[1]
Additional paid-in capital	[1]
Accumulated deficit				9,584
Accumulated other comprehensive loss	[1]
Total stockholders’ equity	[1]			9,584
Total liabilities and stockholders’ equity	[1]			9,584
Accounting Standards Update 2016-16 [Member] | Common Class A [Member]
Common stock value	[1]
Common stock - Class A	[1]
Accounting Standards Update 2016-16 [Member] | Common Class B [Member]
Common stock value	[1]
Common stock - Class A	[1]

[1] For further information about the adoption of Income taxes (Topic 740): Intra-entity Transfers of Assets Other Than Inventory see Note 9 “Income Taxes.”