Goodwill and Other Intangible Assets

3 Months Ended

Apr. 30, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

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

On January 31, 2019, the Company completed an annual review of goodwill and other intangible assets. Based on a review of qualitative factors it was determined it was more likely than not that the fair value of our Seamap reporting unit was greater than its carrying value.

During the three months ended April 30, 2019 there have been no substantive indicators of impairment.

Aggregate amortization expense was $454,000 and $447,000 for the three months ended April 30, 2019 and 2018, respectively. 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