Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Apr. 30, 2020

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 4/30/2020	April 30, 2020										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	6.8	$	9,299	$	(5,152	)	$	—		$	4,147	$	9,293	$	(4,971	)	$	—		$	4,322
Customer relationships	1.6	5,024		(4,002		)	—			1,022		5,024		(3,831		)	—			1,193
Patents	4.3	2,440		(1,339		)	—			1,101		2,440		(1,277		)	—			1,163
Trade name	6.1	894		(66		)	(760		)	68		894		(63		)	(760		)	71
Developed technology	5.7	1,430		(620		)	—			810		1,430		(584		)	—			846
Other	4.2	654		(99		)	—			555		653		(87		)	—			566
Amortizable intangible assets		$	19,741	$	(11,278	)	$	(760	)	$	7,703	$	19,734	$	(10,813	)	$	(760	)	$	8,161

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of April 30, 2020, future estimated amortization expense related to amortizable intangible assets was estimated to be (in thousands):

For fiscal years ending January 31
2020	$	1,312
2021	1,201
2022	1,051
2023	949
2024	710
Thereafter	2,480
Total	$	7,703