Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Apr. 30, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 4/30/2021	April 30, 2021								January 31, 2021
		Gross Carrying Amount		Accumulated Amortization		Impairment		Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization		Impairment		Net Carrying Amount
Goodwill		$	7,060	$	—	$	(7,060)	$	—	$	7,060	$	—	$	(7,060)	$	—
Proprietary rights	7.0	$	7,784	$	(3,807)	$	—	$	3,977	$	7,781	$	(3,688)	$	—	$	4,093
Customer relationships	0.6	5,024		(4,677)		—		347		5,024		(4,513)		—		511
Patents	3.3	2,440		(1,590)		—		850		2,440		(1,528)		—		912
Trade name	5.1	894		(77)		(760)		57		894		(74)		(760)		60
Developed technology	4.7	1,430		(762)		—		668		1,430		(727)		—		703
Other	3.1	684		(246)		—		438		684		(213)		—		471
Amortizable intangible assets		$	18,256	$	(11,159)	$	(760)	$	6,337	$	18,253	$	(10,743)	$	(760)	$	6,750

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of April 30, 2021, future estimated amortization expense related to amortizable intangible assets was estimated to be (in thousands):

For fiscal years ending January 31
2022	$	896
2023	1,125
2024	989
2025	795
2026	658
Thereafter	1,874
Total	$	6,337