Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Apr. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 4/30/2019	April 30, 2019										January 31, 2019
		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	8.0	$	9,296	$	(4,447	)	$	—		$	4,849	$	9,303	$	(4,292	)	$	—		$	5,011
Customer relationships	2.6	5,024		(3,318		)	—			1,706		5,024		(3,147		)	—			1,877
Patents	5.2	2,440		(1,090		)	—			1,350		2,441		(1,028		)	—			1,413
Trade name	7.1	894		(55		)	—			839		894		(52		)	—			842
Developed technology	6.7	1,430		(477		)	—			953		1,430		(441		)	—			989
Other	4.7	476		(33		)	—			443		385		(22		)	—			363
Amortizable intangible assets		$	19,560	$	(9,420	)	$	—		$	10,140	$	19,477	$	(8,982	)	$	—		$	10,495

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of April 30, 2019, future estimated amortization expense related to amortizable intangible assets was estimated to be (in thousands):

For fiscal years ending January 31
2020	$	1,437
2021	1,707
2022	1,199
2023	1,098
2024	894
Thereafter	3,805
Total	$	10,140