Goodwill and Other Intangible Assets (Tables)

6 Months Ended

12 Months Ended

Jul. 31, 2021

Jan. 31, 2021

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 7/31/2021		July 31, 2021										January 31, 2021
			Gross Carrying Amount		Accumulated Amortization			Accumulated Impairment			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Impairment			Net Carrying Amount
Goodwill			$	7,060	$	—		$	(7,060	)	$	—	$	7,060	$	—		$	(7,060	)	$	—
Proprietary rights		6.4	$	8,220	$	(3,920	)	$	—		$	4,300	$	7,781	$	(3,688	)	$	—		$	4,093
Customer relationships		0.4		5,024		(4,748	)		—			276		5,024		(4,513	)		—			511
Patents		3.1		2,440		(1,653	)		—			787		2,440		(1,528	)		—			912
Trade name		4.8		894		(80	)		(760	)		54		894		(74	)		(760	)		60
Developed technology		4.4		1,430		(798	)		—			632		1,430		(727	)		—			703
Other		2.8		684		(278	)		—			406		684		(213	)		—			471
Amortizable intangible assets			$	18,692	$	(11,477	)	$	(760	)	$	6,455	$	18,253	$	(10,743	)	$	(760	)	$	6,750

Goodwill and other intangible assets from continuing operations consisted of the following:

	Weighted Average Life at 1/31/20		January 31, 2021										January 31, 2020
			Gross Carrying Amount		Accumulated Amortization			Impairment			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Impairment			Net Carrying Amount
			(in thousands)										(in thousands)
Goodwill			$	7,060	$	—		$	(7,060	)	$	—	$	7,060	$	—		$	(4,529	)	$	2,531
Proprietary rights		7.2	$	7,781	$	(3,688	)		—			4,093	$	9,247	$	(4,950	)		—			4,297
Customer relationships		0.8		5,024		(4,513	)		—			511		5,024		(3,831	)		—			1,193
Patents		3.6		2,440		(1,528	)		—			912		2,440		(1,277	)		—			1,163
Trade name		5.3		894		(74	)		(760	)		60		894		(63	)		(760	)		71
Developed technology		4.9		1,430		(727	)		—			703		1,430		(584	)		—			846
Other		3.4		684		(213	)		—			471		653		(87	)		—			566
Amortizable intangible assets			$	18,253	$	(10,743	)	$	(760	)	$	6,750	$	19,688	$	(10,792	)	$	(760	)	$	8,136

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of July 31, 2021, future estimated amortization expense related to amortizable intangible assets was estimated to be (in thousands):

For fiscal years ending January 31
2022	$	588
2023		1,167
2024		1,032
2025		837
2026		700
Thereafter		2,131
Total	$	6,455

Aggregate amortization expense was $1.8 million, and $1.8 million for the fiscal years ended January 31, 2021 and 2020, respectively. As of January 31, 2021, future estimated amortization expense related to amortizable intangible assets is estimated to be (in thousands):

For fiscal year ending January 31:
2022	$	1,266
2023		1,125
2024		989
2025		828
2026		658
Thereafter		1,884
Total	$	6,750