Condensed Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2020	Oct. 31, 2019	Oct. 31, 2020	Oct. 31, 2019
Revenue:
Revenues	$ 76,660	$ 77,807	$ 224,888	$ 232,220
Costs of revenue:
Costs of revenues	30,655	33,717	93,903	106,683
Gross profit	46,005	44,090	130,985	125,537
Operating expenses:
Sales and marketing	17,415	19,771	53,392	60,853
Research and development	14,177	13,622	41,355	41,479
General and administrative	10,281	9,234	30,597	29,044
Amortization of intangibles from acquisitions	65	67	194	200
Total operating expenses	41,938	42,694	125,538	131,576
Operating income (loss)	4,067	1,396	5,447	(6,039)
Other expense (income):
Interest income	(108)	(695)	(757)	(2,208)
Interest expense	142	176	447	477
Other expense (income), net	194	386	833	60
Total other expense (income), net	228	(133)	523	(1,671)
Income (loss) before income taxes	3,839	1,529	4,924	(4,368)
Income tax expense	626	1,404	2,061	11,991
Net income (loss)	3,213	125	2,863	(16,359)
Diluted net income (loss) per share
Net income (loss)	3,213	125	2,863	(16,359)
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	405	(313)	(643)	(278)
Total comprehensive income (loss)	3,618	(188)	2,220	(16,637)
Common Class A [Member]
Other expense (income):
Net income (loss)	$ 2,770	$ 107	$ 2,470	$ (14,045)
Basic net income (loss) per share
Basic net (loss) income per share (in dollars per share)	$ 0.16	$ 0.01	$ 0.14	$ (0.85)
Diluted net income (loss) per share
Diluted net (loss) income per share (in dollars per share)	$ 0.16	$ 0.01	$ 0.14	$ (0.85)
Net income (loss)	$ 2,770	$ 107	$ 2,470	$ (14,045)
Common Class B [Member]
Other expense (income):
Net income (loss)	$ 443	$ 18	$ 393	$ (2,314)
Basic net income (loss) per share
Basic net (loss) income per share (in dollars per share)	$ 0.13	$ 0.01	$ 0.12	$ (0.71)
Diluted net income (loss) per share
Diluted net (loss) income per share (in dollars per share)	$ 0.13	$ 0.01	$ 0.12	$ (0.71)
Net income (loss)	$ 443	$ 18	$ 393	$ (2,314)
Subscription and Circulation [Member]
Revenue:
Revenues	33,761	27,328	95,598	78,522
Costs of revenue:
Costs of revenues	10,716	9,540	31,803	28,860
License [Member]
Revenue:
Revenues	1,682	3,295	5,946	11,277
Costs of revenue:
Costs of revenues	441	510	1,407	1,655
Maintenance [Member]
Revenue:
Revenues	27,028	29,699	79,922	89,184
Costs of revenue:
Costs of revenues	6,267	7,291	19,424	22,353
Professional Services [Member]
Revenue:
Revenues	14,189	17,485	43,422	53,237
Costs of revenue:
Costs of revenues	$ 13,231	$ 16,376	$ 41,269	$ 53,815