Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 1/31/19	January 31, 2019										January 31, 2018
		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	$	—		$	(4,529	)	$	2,531	$	7,060	$	—		$	(4,529	)	$	2,531
Proprietary rights	8.4	$	9,303	$	(4,292	)	—			5,011		$	6,181	$	(3,663	)	—			2,518
Customer relationships	2.8	5,024		(3,147		)	—			1,877		5,024		(2,464		)	—			2,560
Patents	5.5	2,441		(1,028		)	—			1,413		1,730		(778		)	—			952
Trade name	7.3	894		(52		)	—			842		894		(41		)	—			853
Developed technology	6.9	1,430		(441		)	—			989		1,430		(298		)	—			1,132
Other	4.7	385		(22		)	—			363		—		—			—			—
Amortizable intangible assets		$	19,477	$	(8,982	)	$	—		$	10,495	$	15,259	$	(7,244	)	$	—		$	8,015

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of January 31, 2019, future estimated amortization expense related to amortizable intangible assets is estimated to be (in thousands):

For fiscal years ending January 31:
2020	$	1,861
2021	1,702
2022	1,165
2023	1,067
2024	919
Thereafter	3,781
Total	$	10,495