Note 1 - Basis of Presentation and Recent Accounting Pronouncements - Effects of Adopting Topic 606 (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended		9 Months Ended
		Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2018	Oct. 31, 2017	Feb. 01, 2018	Jan. 31, 2018	Jan. 31, 2017
Cash and Cash Equivalents, at Carrying Value, Ending Balance		$ 138,080	$ 140,027	$ 138,080	$ 140,027	$ 147,023	$ 147,023	$ 145,082
Accounts receivable, net		46,420		46,420		83,518	83,518
Other current assets, net		19,493		19,493		19,869	15,856
Total current assets		203,993		203,993		250,410	246,397
Property and equipment, net		29,600		29,600		30,408	30,408
Capitalized software costs, net		1,486		1,486		990	990
Goodwill		12,284		12,284		11,023	11,023
Deferred tax assets, net						15,885	7,944
Other assets, net		11,784		11,784		11,476	3,055
Total assets		270,510		270,510		320,192	299,817
Current portion of long-term debt		481		481		466	466
Accounts payable		10,660		10,660		14,818	14,818
Deferred revenue		80,537		80,537		115,454	116,693
Other current liabilities		35,059		35,059		43,460	43,460
Total current liabilities		126,737		126,737		174,198	175,437
Long-term debt		12,957		12,957		13,313	13,313
Other liabilities		4,773		4,773		4,928	5,439
Additional paid-in capital		194,292		194,292		200,456	200,456
Treasury stock		(7,384)		(7,384)		(12,461)	(12,461)
Retained Earnings (Accumulated Deficit), Ending Balance		(52,047)		(52,047)		(53,434)	(75,559)
Accumulated other comprehensive loss		(8,838)		(8,838)		(6,828)	(6,828)
Total stockholders’ equity		126,043		126,043		127,753	105,628
Total liabilities and stockholders’ equity		270,510		270,510		320,192	299,817
Cash and equivalents		138,080	140,027	138,080	140,027	147,023	147,023	$ 145,082
Accounts receivable, net		46,420		46,420		83,518	83,518
Other current assets, net		19,493		19,493		19,869	15,856
Total current assets		203,993		203,993		250,410	246,397
Property and equipment, net		29,600		29,600		30,408	30,408
Capitalized software costs, net		1,486		1,486		990	990
Goodwill		12,284		12,284		11,023	11,023
Deferred tax assets, net		11,363		11,363			7,944
Other assets, net		11,784		11,784		11,476	3,055
Total assets		270,510		270,510		320,192	299,817
Current portion of long-term debt		481		481		466	466
Accounts payable		10,660		10,660		14,818	14,818
Deferred revenue		80,537		80,537		115,454	116,693
Other current liabilities		35,059		35,059		43,460	43,460
Total current liabilities		126,737		126,737		174,198	175,437
Long-term debt		12,957		12,957		13,313	13,313
Other liabilities		4,773		4,773		4,928	5,439
Additional paid-in capital		194,292		194,292		200,456	200,456
Accumulated deficit		(52,047)		(52,047)		(53,434)	(75,559)
Accumulated other comprehensive loss		(8,838)		(8,838)		(6,828)	(6,828)
Total stockholders’ equity		126,043		126,043		127,753	105,628
Total liabilities and stockholders’ equity		270,510		270,510		320,192	299,817
Revenues		79,577	76,925	250,310	224,265
Costs of revenues		37,361	38,046	118,864	109,606
Gross profit		42,216	38,879	131,446	114,659
Sales and marketing		18,447	17,697	57,895	52,981
Research and development		13,155	12,111	40,674	35,332
General and administrative		8,095	8,556	26,823	26,373
Amortization of intangibles from acquisitions		45	85	45	359
Total operating expenses		39,742	38,449	125,437	115,045
Operating income		2,474	430	6,009	(386)
Interest income		(646)	(440)	(1,913)	(1,101)
Interest expense		177	195	488	508
Other (income) expense, net		(636)	(413)	(1,309)	1,399
Total other income, net		(1,105)	(658)	(2,734)	806
Income before income taxes		3,579	1,088	8,743	(1,192)
Income tax expense		597	1,249	3,251	2,701
Net income		2,982	(161)	5,492	(3,893)
Net income (loss)		2,982	(161)	5,492	(3,893)
Amortization of costs capitalized to obtain and fulfill contracts				3,107
Net change in valuation allowance				3,760	4,182
Costs capitalized to obtain and fulfill contracts				(2,510)
Other assets				688	2,023
Deferred revenue				(30,977)	(23,839)
Net cash provided by operating activities				15,117	2,844
Effect of exchange rates on cash and equivalents				(4,242)	3,094
Common Class A [Member]
Common stock value		16		16		16	16
Common stock		16		16		16	16
Net income		$ 2,557	$ (139)	$ 4,707	$ (3,332)
Basic income per share (in dollars per share)		$ 0.16	$ (0.01)	$ 0.29	$ (0.21)
Diluted income per share (in dollars per share)		$ 0.14	$ (0.01)	$ 0.26	$ (0.21)
Net income (loss)		$ 2,557	$ (139)	$ 4,707	$ (3,332)
Common Class B [Member]
Common stock value		4		4		4	4
Common stock		4		4		4	4
Net income		$ 425	$ (22)	$ 785	$ (561)
Basic income per share (in dollars per share)		$ 0.13	$ (0.01)	$ 0.24	$ (0.17)
Diluted income per share (in dollars per share)		$ 0.12	$ (0.01)	$ 0.23	$ (0.17)
Net income (loss)		$ 425	$ (22)	$ 785	$ (561)
Subscription and Circulation [Member]
Deferred revenue		27,751		27,751			31,034
Deferred revenue		27,751		27,751			31,034
Revenues		23,863	17,190	67,813	49,953
Costs of revenues		8,686	7,605	25,248	22,753
License [Member]
Deferred revenue		95		95			756
Deferred revenue		95		95			756
Revenues		4,631	6,628	16,458	18,636
Costs of revenues		534	690	1,772	2,203
Maintenance [Member]
Deferred revenue		50,708		50,708			80,811
Deferred revenue		50,708		50,708			80,811
Revenues		30,401	32,407	92,458	96,284
Costs of revenues		7,716	7,840	23,355	23,374
Professional Services [Member]
Deferred revenue		1,811		1,811			3,523
Deferred revenue		1,811		1,811			$ 3,523
Revenues		20,682	20,700	73,581	59,392
Costs of revenues		20,425	$ 21,911	68,489	$ 61,276
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance		138,080		138,080
Accounts receivable, net		46,420		46,420
Other current assets, net		15,406		15,406
Total current assets		199,906		199,906
Property and equipment, net		29,600		29,600
Capitalized software costs, net		1,486		1,486
Goodwill		12,284		12,284
Other assets, net		4,346		4,346
Total assets		259,944		259,944
Current portion of long-term debt		481		481
Accounts payable		10,660		10,660
Deferred revenue		84,167		84,167
Other current liabilities		35,059		35,059
Total current liabilities		130,367		130,367
Long-term debt		12,957		12,957
Other liabilities		5,418		5,418
Additional paid-in capital		194,292		194,292
Treasury stock		(7,384)		(7,384)
Retained Earnings (Accumulated Deficit), Ending Balance		(66,908)		(66,908)
Accumulated other comprehensive loss		(8,818)		(8,818)
Total stockholders’ equity		111,202		111,202
Total liabilities and stockholders’ equity		259,944		259,944
Cash and equivalents		138,080		138,080
Accounts receivable, net		46,420		46,420
Other current assets, net		15,406		15,406
Total current assets		199,906		199,906
Property and equipment, net		29,600		29,600
Capitalized software costs, net		1,486		1,486
Goodwill		12,284		12,284
Deferred tax assets, net		12,322		12,322
Other assets, net		4,346		4,346
Total assets		259,944		259,944
Current portion of long-term debt		481		481
Accounts payable		10,660		10,660
Deferred revenue		84,167		84,167
Other current liabilities		35,059		35,059
Total current liabilities		130,367		130,367
Long-term debt		12,957		12,957
Other liabilities		5,418		5,418
Additional paid-in capital		194,292		194,292
Accumulated deficit		(66,908)		(66,908)
Accumulated other comprehensive loss		(8,818)		(8,818)
Total stockholders’ equity		111,202		111,202
Total liabilities and stockholders’ equity		259,944		259,944
Revenues		79,067		247,124
Costs of revenues		37,323		118,840
Gross profit		41,744		128,284
Sales and marketing		18,141		57,305
Research and development		13,096		40,497
General and administrative		8,095		26,823
Amortization of intangibles from acquisitions		45		45
Total operating expenses		39,377		124,670
Operating income		2,367		3,614
Interest income		(646)		(1,913)
Interest expense		177		488
Other (income) expense, net		(636)		(1,309)
Total other income, net		(1,105)		(2,734)
Income before income taxes		3,472		6,348
Income tax expense		601		3,176
Net income		2,871		3,172
Net income (loss)		2,871		3,172
Amortization of costs capitalized to obtain and fulfill contracts				624
Net change in valuation allowance				4,408
Costs capitalized to obtain and fulfill contracts				(642)
Other assets				430
Deferred revenue				(28,452)
Net cash provided by operating activities				15,097
Effect of exchange rates on cash and equivalents				(4,222)
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Common Class A [Member]
Common stock value		16		16
Common stock		$ 16		$ 16
Basic income per share (in dollars per share)		$ 0.15		$ 0.17
Diluted income per share (in dollars per share)		$ 0.13		$ 0.15
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Common Class B [Member]
Common stock value		$ 4		$ 4
Common stock		$ 4		$ 4
Basic income per share (in dollars per share)		$ 0.13		$ 0.14
Diluted income per share (in dollars per share)		$ 0.12		$ 0.13
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Subscription and Circulation [Member]
Revenues		$ 23,346		$ 66,739
Costs of revenues		8,648		25,224
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | License [Member]
Revenues		4,819		15,260
Costs of revenues		534		1,772
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Maintenance [Member]
Revenues		30,451		92,621
Costs of revenues		7,716		23,355
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Professional Services [Member]
Revenues		20,451		72,504
Costs of revenues		20,425		68,489
Accounting Standards Update 2014-09 [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Accounts receivable, net
Other current assets, net						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, net						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
Accounting Standards Update 2014-09 [Member] | Common Class B [Member]
Common stock value
Common stock
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, net		(4,087)		(4,087)
Total current assets		(4,087)		(4,087)
Property and equipment, net
Capitalized software costs, net
Goodwill
Other assets, net		(7,438)		(7,438)
Total assets		(10,566)		(10,566)
Current portion of long-term debt
Accounts payable
Deferred revenue		3,630		3,630
Other current liabilities
Total current liabilities		3,630		3,630
Long-term debt
Other liabilities		645		645
Additional paid-in capital
Treasury stock
Retained Earnings (Accumulated Deficit), Ending Balance		(14,861)		(14,861)
Accumulated other comprehensive loss		20		20
Total stockholders’ equity		(14,841)		(14,841)
Total liabilities and stockholders’ equity		(10,566)		(10,566)
Cash and equivalents
Accounts receivable, net
Other current assets, net		(4,087)		(4,087)
Total current assets		(4,087)		(4,087)
Property and equipment, net
Capitalized software costs, net
Goodwill
Deferred tax assets, net		959		959
Other assets, net		(7,438)		(7,438)
Total assets		(10,566)		(10,566)
Current portion of long-term debt
Accounts payable
Deferred revenue		3,630		3,630
Other current liabilities
Total current liabilities		3,630		3,630
Long-term debt
Other liabilities		645		645
Additional paid-in capital
Accumulated deficit		(14,861)		(14,861)
Accumulated other comprehensive loss		20		20
Total stockholders’ equity		(14,841)		(14,841)
Total liabilities and stockholders’ equity		(10,566)		(10,566)
Revenues		(510)		(3,186)
Costs of revenues		(38)		(24)
Gross profit		(472)		(3,162)
Sales and marketing		(306)		(590)
Research and development		(59)		(177)
General and administrative
Amortization of intangibles from acquisitions
Total operating expenses		(365)		(767)
Operating income		(107)		(2,395)
Interest income
Interest expense
Other (income) expense, net
Total other income, net
Income before income taxes		(107)		(2,395)
Income tax expense		4		(75)
Net income		(111)		(2,320)
Net income (loss)		(111)		(2,320)
Amortization of costs capitalized to obtain and fulfill contracts				(2,483)
Net change in valuation allowance				648
Costs capitalized to obtain and fulfill contracts				1,868
Other assets				(258)
Deferred revenue				2,525
Net cash provided by operating activities				(20)
Effect of exchange rates on cash and equivalents				20
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
Basic income per share (in dollars per share)		$ (0.01)		$ (0.12)
Diluted income per share (in dollars per share)		$ (0.01)		$ (0.11)
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
Basic income per share (in dollars per share)		$ 0		$ (0.10)
Diluted income per share (in dollars per share)		$ 0		$ (0.10)
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Subscription and Circulation [Member]
Revenues		$ (517)		$ (1,074)
Costs of revenues		(38)		(24)
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | License [Member]
Revenues		188		(1,198)
Costs of revenues
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Maintenance [Member]
Revenues		50		163
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		(231)		(1,077)
Costs of revenues
Accounting Standards Update 2016-16 [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Accounts receivable, net	[1]
Other current assets, net	[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
Accounts receivable, net	[1]
Other current assets, net	[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	[1]
Accounting Standards Update 2016-16 [Member] | Common Class B [Member]
Common stock value	[1]
Common stock	[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."