Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	12 Months Ended
	Jan. 31, 2021	Jan. 31, 2020	Jan. 31, 2019
Revenue:
Revenues	$ 307,865	$ 310,772	$ 333,016
Costs of revenue:
Costs of revenues	125,372	139,909	155,884
Gross profit	182,493	170,863	177,132
Operating expenses:
Sales and marketing	71,779	82,115	78,207
Research and development	56,084	54,726	53,993
General and administrative	41,643	39,442	35,248
Amortization of intangible assets from acquisitions	289	268	111
Total operating expenses	169,795	176,551	167,559
Operating income (loss)	12,698	(5,688)	9,573
Other (income) expense:
Interest income	(923)	(2,782)	(2,600)
Interest expense	591	630	643
Other expense (income), net	2,209	68	(387)
Total other expense (income), net	1,877	(2,084)	(2,344)
Income (loss) before income taxes	10,821	(3,604)	11,917
Income tax (benefit) expense	(244)	12,345	1,489
Net income (loss)	11,065	(15,949)	10,428
Diluted net income (loss) per share:
Net income (loss)	11,065	(15,949)	10,428
Other comprehensive income (loss), net of tax:
Foreign currency translation adjustment	157	(684)	(833)
Total comprehensive income (loss)	11,222	(16,633)	9,595
Common Class A [Member]
Other (income) expense:
Net income (loss)	$ 9,541	$ (13,692)	$ 8,939
Basic net income (loss) per share:
Basic net (loss) income per share (in dollars per share)	$ 0.55	$ (0.82)	$ 0.55
Diluted net income (loss) per share:
Diluted net (loss) income per share (in dollars per share)	$ 0.53	$ (0.82)	$ 0.50
Net income (loss)	$ 9,541	$ (13,692)	$ 8,939
Common Class B [Member]
Other (income) expense:
Net income (loss)	$ 1,524	$ (2,257)	$ 1,489
Basic net income (loss) per share:
Basic net (loss) income per share (in dollars per share)	$ 0.46	$ (0.69)	$ 0.46
Diluted net income (loss) per share:
Diluted net (loss) income per share (in dollars per share)	$ 0.45	$ (0.69)	$ 0.44
Net income (loss)	$ 1,524	$ (2,257)	$ 1,489
Subscription and Circulation [Member]
Revenue:
Revenues	131,133	107,168	91,861
Costs of revenue:
Costs of revenues	42,369	38,451	34,128
License [Member]
Revenue:
Revenues	11,152	16,570	25,568
Costs of revenue:
Costs of revenues	2,300	2,308	2,714
Maintenance [Member]
Revenue:
Revenues	107,083	117,896	122,936
Costs of revenue:
Costs of revenues	26,039	29,702	31,307
Professional Services [Member]
Revenue:
Revenues	58,497	69,138	92,651
Costs of revenue:
Costs of revenues	$ 54,664	$ 69,448	$ 87,735