Note 1 - Summary of Business and Significant Accounting Policies - Effects of Adopting Topic 606 (Details) - USD ($)		3 Months Ended								12 Months Ended
		Jan. 31, 2019	Oct. 31, 2018	Jul. 31, 2018	Apr. 30, 2018	Jan. 31, 2018	Oct. 31, 2017	Jul. 31, 2017	Apr. 30, 2017	Jan. 31, 2019	Jan. 31, 2018	Jan. 31, 2017	Feb. 01, 2018	Jan. 31, 2016
Cash and Cash Equivalents, at Carrying Value, Ending Balance		$ 139,413,000				$ 147,023,000				$ 139,413,000	$ 147,023,000	$ 145,082,000	$ 147,023,000	$ 137,731,000
Accounts receivable, net		81,577,000				83,518,000				81,577,000	83,518,000		83,518,000
Other current assets		22,150,000				15,856,000				22,150,000	15,856,000		19,869,000
Total current assets		244,340,000				246,397,000				244,340,000	246,397,000		250,410,000
Property and equipment, net		29,621,000				30,408,000				29,621,000	30,408,000		30,408,000
Capitalized software costs, net		1,598,000				990,000				1,598,000	990,000		990,000
Goodwill		12,423,000				11,023,000				12,423,000	11,023,000	10,558,000	11,023,000
Deferred tax assets, net						7,944,000					7,944,000		15,885,000
Other assets, net		13,020,000				3,055,000				13,020,000	3,055,000		11,476,000
Total assets		317,174,000				299,817,000				317,174,000	299,817,000		320,192,000
Current portion of long-term debt		487,000				466,000				487,000	466,000		466,000
Accounts payable		9,902,000				14,818,000				9,902,000	14,818,000		14,818,000
Deferred revenue		115,253,000				116,693,000				115,253,000	116,693,000		115,454,000
Other current liabilities		40,348,000				43,460,000				40,348,000	43,460,000		43,460,000
Total current liabilities		165,990,000				175,437,000				165,990,000	175,437,000		174,198,000
Long-term debt		12,836,000				13,313,000				12,836,000	13,313,000		13,313,000
Other liabilities		5,101,000				5,439,000				5,101,000	5,439,000		4,928,000
Additional paid-in capital		196,723,000				200,456,000				196,723,000	200,456,000		200,456,000
Treasury stock		(7,350,000)				(12,461,000)				(7,350,000)	(12,461,000)		(12,461,000)
Retained Earnings (Accumulated Deficit), Ending Balance		(48,485,000)				(75,559,000)				(48,485,000)	(75,559,000)		(53,434,000)
Accumulated other comprehensive loss		(7,661,000)				(6,828,000)				(7,661,000)	(6,828,000)		(6,828,000)
Total stockholders’ equity		133,247,000				105,628,000				133,247,000	105,628,000	112,686,000	127,753,000	127,011,000
Total liabilities and stockholders’ equity		317,174,000				299,817,000				317,174,000	299,817,000		320,192,000
Cash and equivalents		139,413,000				147,023,000				139,413,000	147,023,000	145,082,000	147,023,000	137,731,000
Short-term investments		1,200,000								1,200,000
Accounts receivable, net		81,577,000				83,518,000				81,577,000	83,518,000		83,518,000
Other current assets, net		22,150,000				15,856,000				22,150,000	15,856,000		19,869,000
Total current assets		244,340,000				246,397,000				244,340,000	246,397,000		250,410,000
Property and equipment, net		29,621,000				30,408,000				29,621,000	30,408,000		30,408,000
Capitalized software costs, net		1,598,000				990,000				1,598,000	990,000		990,000
Goodwill		12,423,000				11,023,000				12,423,000	11,023,000	10,558,000	11,023,000
Deferred tax assets, net		16,172,000								16,172,000
Other assets, net		13,020,000				3,055,000				13,020,000	3,055,000		11,476,000
Total assets		317,174,000				299,817,000				317,174,000	299,817,000		320,192,000
Current portion of long-term debt		487,000				466,000				487,000	466,000		466,000
Accounts payable		9,902,000				14,818,000				9,902,000	14,818,000		14,818,000
Deferred revenue		115,253,000				116,693,000				115,253,000	116,693,000		115,454,000
Other current liabilities		40,348,000				43,460,000				40,348,000	43,460,000		43,460,000
Total current liabilities		165,990,000				175,437,000				165,990,000	175,437,000		174,198,000
Long-term debt		12,836,000				13,313,000				12,836,000	13,313,000		13,313,000
Other liabilities		5,101,000				5,439,000				5,101,000	5,439,000		4,928,000
Additional paid-in capital		196,723,000				200,456,000				196,723,000	200,456,000		200,456,000
Accumulated deficit		(48,485,000)				(75,559,000)				(48,485,000)	(75,559,000)		(53,434,000)
Accumulated other comprehensive loss		(7,661,000)				(6,828,000)				(7,661,000)	(6,828,000)		(6,828,000)
Total stockholders’ equity		133,247,000				105,628,000				133,247,000	105,628,000	112,686,000	127,753,000	$ 127,011,000
Total liabilities and stockholders’ equity		317,174,000				299,817,000				317,174,000	299,817,000		320,192,000
Revenues		82,706,000	$ 79,577,000	$ 84,543,000	$ 86,190,000	80,753,000	$ 76,925,000	$ 75,958,000	$ 71,382,000	333,016,000	305,018,000	277,973,000
Costs of revenues		79,142,000	77,103,000	82,817,000	84,381,000	83,441,000	76,495,000	75,415,000	72,741,000	155,884,000	149,425,000	130,851,000
Gross profit		45,686,000	42,216,000	44,107,000	45,123,000	40,934,000	38,879,000	39,264,000	36,516,000	177,132,000	155,593,000	147,122,000
Sales and marketing										78,207,000	75,368,000	67,194,000
Research and development										53,993,000	47,661,000	43,587,000
General and administrative										35,248,000	35,222,000	32,318,000
Amortization of intangible assets from acquisitions										111,000	416,000	659,000
Total operating expenses										167,559,000	158,667,000	143,758,000
Operating income		3,564,000	2,474,000	1,726,000	1,809,000	(2,688,000)	430,000	543,000	(1,359,000)	9,573,000	(3,074,000)	3,364,000
Interest income										(2,600,000)	(1,547,000)	(696,000)
Interest expense										643,000	669,000	670,000
Other (income) expense, net										(387,000)	2,012,000	(436,000)
Total other (income) expense, net										(2,344,000)	1,134,000	(462,000)
Income before income taxes										11,917,000	(4,208,000)	3,826,000
Income tax expense										1,489,000	4,857,000	19,276,000
Net income (loss)		4,936,000	2,982,000	1,113,000	1,397,000	(5,172,000)	(161,000)	(1,161,000)	(2,571,000)	10,428,000	(9,065,000)	(15,450,000)
Net income (loss)		4,936,000	$ 2,982,000	$ 1,113,000	$ 1,397,000	(5,172,000)	$ (161,000)	$ (1,161,000)	$ (2,571,000)	10,428,000	(9,065,000)	(15,450,000)
Amortization of costs capitalized to obtain and fulfill contracts										4,176,000
Net change in valuation allowance										3,224,000	1,695,000	16,861,000
Costs capitalized to obtain and fulfill contracts										(4,130,000)
Other assets										(2,890,000)	(1,204,000)	(90,000)
Deferred revenue										3,031,000	7,001,000	7,245,000
Net cash provided by operating activities										19,007,000	10,418,000	18,680,000
Effect of exchange rates on cash and equivalents										(2,668,000)	5,357,000	(109,000)
Common Class A [Member]
Common stock value		16,000				16,000				16,000	16,000		16,000
Common stock - Class A		$ 16,000				$ 16,000				16,000	16,000		16,000
Net income (loss)										$ 8,939,000	$ (7,762,000)	$ (13,211,000)
Basic income per share (in dollars per share)		$ 0.26	$ 0.16	$ 0.06	$ 0.07	$ (0.28)	$ (0.01)	$ (0.06)	$ (0.14)	$ 0.55	$ (0.49)	$ (0.84)
Diluted income per share (in dollars per share)		$ 0.24	0.14	0.05	0.07	$ (0.28)	(0.01)	(0.06)	(0.14)	$ 0.50	$ (0.49)	$ (0.84)
Net income (loss)										$ 8,939,000	$ (7,762,000)	$ (13,211,000)
Common Class B [Member]
Common stock value		$ 4,000				$ 4,000				4,000	4,000		4,000
Common stock - Class A		$ 4,000				$ 4,000				4,000	4,000		4,000
Net income (loss)										$ 1,489,000	$ (1,303,000)	$ (2,239,000)
Basic income per share (in dollars per share)		$ 0.22	0.13	0.05	0.06	$ (0.23)	(0.01)	(0.05)	(0.12)	$ 0.46	$ (0.41)	$ (0.70)
Diluted income per share (in dollars per share)		$ 0.21	$ 0.12	$ 0.05	$ 0.06	$ (0.23)	$ (0.01)	$ (0.05)	$ (0.12)	$ 0.44	$ (0.41)	$ (0.70)
Net income (loss)										$ 1,489,000	$ (1,303,000)	$ (2,239,000)
Subscription and Circulation [Member]
Deferred revenue		$ 34,020,000				$ 31,034,000				34,020,000	31,034,000
Deferred revenue		34,020,000				31,034,000				34,020,000	31,034,000
Revenues										91,861,000	69,615,000	52,167,000
Costs of revenues										34,128,000	30,563,000	27,027,000
License [Member]
Deferred revenue		1,713,000				756,000				1,713,000	756,000
Deferred revenue		1,713,000				756,000				1,713,000	756,000
Revenues										25,568,000	25,807,000	23,633,000
Costs of revenues										2,714,000	2,946,000	2,990,000
Maintenance [Member]
Deferred revenue		77,037,000				80,811,000				77,037,000	80,811,000
Deferred revenue		77,037,000				80,811,000				77,037,000	80,811,000
Revenues										122,936,000	128,142,000	130,406,000
Costs of revenues										31,307,000	31,246,000	30,517,000
Professional Services [Member]
Deferred revenue		2,146,000				3,523,000				2,146,000	3,523,000
Deferred revenue		2,146,000				$ 3,523,000				2,146,000	3,523,000
Revenues										92,651,000	81,454,000	71,767,000
Costs of revenues										87,735,000	$ 84,670,000	$ 70,317,000
Calculated under Revenue Guidance in Effect before Topic 606 [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance		139,413,000								139,413,000
Accounts receivable, net		81,577,000								81,577,000
Other current assets		18,412,000								18,412,000
Total current assets		240,602,000								240,602,000
Property and equipment, net		29,621,000								29,621,000
Capitalized software costs, net		1,598,000								1,598,000
Goodwill		12,423,000								12,423,000
Other assets, net		5,031,000								5,031,000
Total assets		305,653,000								305,653,000
Current portion of long-term debt		487,000								487,000
Accounts payable		9,902,000								9,902,000
Deferred revenue		121,064,000								121,064,000
Other current liabilities		40,348,000								40,348,000
Total current liabilities		171,801,000								171,801,000
Long-term debt		12,836,000								12,836,000
Other liabilities		5,523,000								5,523,000
Additional paid-in capital		196,723,000								196,723,000
Treasury stock		(7,350,000)								(7,350,000)
Retained Earnings (Accumulated Deficit), Ending Balance		(66,242,000)								(66,242,000)
Accumulated other comprehensive loss		(7,658,000)								(7,658,000)
Total stockholders’ equity		115,493,000								115,493,000
Total liabilities and stockholders’ equity		305,653,000								305,653,000
Cash and equivalents		139,413,000								139,413,000
Short-term investments		1,200,000								1,200,000
Accounts receivable, net		81,577,000								81,577,000
Other current assets, net		18,412,000								18,412,000
Total current assets		240,602,000								240,602,000
Property and equipment, net		29,621,000								29,621,000
Capitalized software costs, net		1,598,000								1,598,000
Goodwill		12,423,000								12,423,000
Deferred tax assets, net		16,378,000								16,378,000
Other assets, net		5,031,000								5,031,000
Total assets		305,653,000								305,653,000
Current portion of long-term debt		487,000								487,000
Accounts payable		9,902,000								9,902,000
Deferred revenue		121,064,000								121,064,000
Other current liabilities		40,348,000								40,348,000
Total current liabilities		171,801,000								171,801,000
Long-term debt		12,836,000								12,836,000
Other liabilities		5,523,000								5,523,000
Additional paid-in capital		196,723,000								196,723,000
Accumulated deficit		(66,242,000)								(66,242,000)
Accumulated other comprehensive loss		(7,658,000)								(7,658,000)
Total stockholders’ equity		115,493,000								115,493,000
Total liabilities and stockholders’ equity		305,653,000								305,653,000
Revenues										327,179,000
Costs of revenues										155,796,000
Gross profit										171,383,000
Sales and marketing										78,303,000
Research and development										53,757,000
General and administrative										35,248,000
Amortization of intangible assets from acquisitions										111,000
Total operating expenses										167,419,000
Operating income										3,964,000
Interest income										(2,600,000)
Interest expense										643,000
Other (income) expense, net										(387,000)
Total other (income) expense, net										(2,344,000)
Income before income taxes										6,308,000
Income tax expense										1,096,000
Net income (loss)										5,212,000
Net income (loss)										5,212,000
Amortization of costs capitalized to obtain and fulfill contracts										828,000
Net change in valuation allowance										3,872,000
Costs capitalized to obtain and fulfill contracts										(776,000)
Other assets										(2,814,000)
Deferred revenue										7,514,000
Net cash provided by operating activities										19,004,000
Effect of exchange rates on cash and equivalents										(2,665,000)
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Common Class A [Member]
Common stock value		16,000								16,000
Common stock - Class A		16,000								$ 16,000
Basic income per share (in dollars per share)										$ 0.27
Diluted income per share (in dollars per share)										$ 0.25
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Common Class B [Member]
Common stock value		4,000								$ 4,000
Common stock - Class A		4,000								$ 4,000
Basic income per share (in dollars per share)										$ 0.23
Diluted income per share (in dollars per share)										$ 0.22
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Subscription and Circulation [Member]
Revenues										$ 90,233,000
Costs of revenues										34,040,000
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | License [Member]
Revenues										23,030,000
Costs of revenues										2,714,000
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Maintenance [Member]
Revenues										123,234,000
Costs of revenues										31,307,000
Calculated under Revenue Guidance in Effect before Topic 606 [Member] | Professional Services [Member]
Revenues										90,682,000
Costs of revenues										87,735,000
Accounting Standards Update 2014-09 [Member]
Cash and Cash Equivalents, at Carrying Value, Ending Balance
Accounts receivable, net
Other current assets													4,013,000
Total current assets													4,013,000
Property and equipment, net
Capitalized software costs, net
Goodwill
Deferred tax assets, net													(1,643,000)
Other assets, net													8,421,000
Total assets													10,791,000
Current portion of long-term debt
Accounts payable
Deferred revenue													(1,239,000)
Other current liabilities
Total current liabilities													(1,239,000)
Long-term debt
Other liabilities													(511,000)
Additional paid-in capital
Treasury stock
Retained Earnings (Accumulated Deficit), Ending Balance													12,541,000
Accumulated other comprehensive loss
Total stockholders’ equity													12,541,000
Total liabilities and stockholders’ equity													10,791,000
Cash and equivalents
Accounts receivable, net
Other current assets, net													4,013,000
Total current assets													4,013,000
Property and equipment, net
Capitalized software costs, net
Goodwill
Other assets, net													8,421,000
Total assets													10,791,000
Current portion of long-term debt
Accounts payable
Deferred revenue													(1,239,000)
Other current liabilities
Total current liabilities													(1,239,000)
Long-term debt
Other liabilities													(511,000)
Additional paid-in capital
Accumulated deficit													12,541,000
Accumulated other comprehensive loss
Total stockholders’ equity													12,541,000
Total liabilities and stockholders’ equity													10,791,000
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		(3,738,000)								(3,738,000)
Total current assets		(3,738,000)								(3,738,000)
Property and equipment, net
Capitalized software costs, net
Goodwill
Other assets, net		(7,989,000)								(7,989,000)
Total assets		(11,521,000)								(11,521,000)
Current portion of long-term debt
Accounts payable
Deferred revenue		5,811,000								5,811,000
Other current liabilities
Total current liabilities		5,811,000								5,811,000
Long-term debt
Other liabilities		422,000								422,000
Additional paid-in capital
Treasury stock
Retained Earnings (Accumulated Deficit), Ending Balance		(17,757,000)								(17,757,000)
Accumulated other comprehensive loss		3,000								3,000
Total stockholders’ equity		(17,754,000)								(17,754,000)
Total liabilities and stockholders’ equity		(11,521,000)								(11,521,000)
Cash and equivalents
Short-term investments
Accounts receivable, net
Other current assets, net		(3,738,000)								(3,738,000)
Total current assets		(3,738,000)								(3,738,000)
Property and equipment, net
Capitalized software costs, net
Goodwill
Deferred tax assets, net		206,000								206,000
Other assets, net		(7,989,000)								(7,989,000)
Total assets		(11,521,000)								(11,521,000)
Current portion of long-term debt
Accounts payable
Deferred revenue		5,811,000								5,811,000
Other current liabilities
Total current liabilities		5,811,000								5,811,000
Long-term debt
Other liabilities		422,000								422,000
Additional paid-in capital
Accumulated deficit		(17,757,000)								(17,757,000)
Accumulated other comprehensive loss		3,000								3,000
Total stockholders’ equity		(17,754,000)								(17,754,000)
Total liabilities and stockholders’ equity		(11,521,000)								(11,521,000)
Revenues										(5,837,000)
Costs of revenues										(88,000)
Gross profit										(5,749,000)
Sales and marketing										96,000
Research and development										(236,000)
General and administrative
Amortization of intangible assets from acquisitions
Total operating expenses										(140,000)
Operating income										(5,609,000)
Interest income
Interest expense
Other (income) expense, net
Total other (income) expense, net
Income before income taxes										(5,609,000)
Income tax expense										(393,000)
Net income (loss)										(5,216,000)
Net income (loss)										(5,216,000)
Amortization of costs capitalized to obtain and fulfill contracts										(3,348,000)
Net change in valuation allowance										648,000
Costs capitalized to obtain and fulfill contracts										3,354,000
Other assets										76,000
Deferred revenue										4,483,000
Net cash provided by operating activities										(3,000)
Effect of exchange rates on cash and equivalents										3,000
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 income per share (in dollars per share)										$ (0.28)
Diluted income per share (in dollars per share)										$ (0.25)
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 income per share (in dollars per share)										$ (0.23)
Diluted income per share (in dollars per share)										$ (0.22)
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Subscription and Circulation [Member]
Revenues										$ (1,628,000)
Costs of revenues										(88,000)
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | License [Member]
Revenues										(2,538,000)
Costs of revenues
Accounting Standards Update 2014-09 [Member] | Difference between Revenue Guidance in Effect before and after Topic 606 [Member] | Maintenance [Member]
Revenues										298,000
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										(1,969,000)
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	[1]
Total current assets	[1]
Property and equipment, net	[1]
Capitalized software costs, net	[1]
Goodwill	[1]
Deferred tax assets, net	[1]												9,584,000
Other assets, net	[1]
Total assets	[1]												9,584,000
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													9,584,000
Accumulated other comprehensive loss	[1]
Total stockholders’ equity	[1]												9,584,000
Total liabilities and stockholders’ equity	[1]												9,584,000
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]												9,584,000
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													9,584,000
Accumulated other comprehensive loss	[1]
Total stockholders’ equity	[1]												9,584,000
Total liabilities and stockholders’ equity	[1]												9,584,000
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 ASU2016-16 Intra-entity Transfers of Assets Other Than Inventory see Note 4 "Income Taxes."