Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Oct. 31, 2018

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 10/31/2018	October 31, 2018										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	7.6	$	9,594	$	(4,077	)	$	—		$	5,517	$	6,181	$	(3,663	)	$	—		$	2,518
Customer relationships	3.1	5,024		(2,976		)	—			2,048		5,024		(2,464		)	—			2,560
Patents	5.7	2,441		(965		)	—			1,476		1,730		(778		)	—			952
Trade name	7.6	894		(49		)	—			845		894		(41		)	—			853
Developed technology	7.2	1,430		(405		)	—			1,025		1,430		(298		)	—			1,132
Amortizable intangible assets		$	19,383	$	(8,472	)	$	—		$	10,911	$	15,259	$	(7,244	)	$	—		$	8,015

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of October 31, 2018, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31 (in thousands):
2019	$	472
2020	1,845
2021	1,697
2022	1,212
2023	1,018
2024 and thereafter	4,667
Total	$	10,911