Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Oct. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 10/31/2017	October 31, 2017							January 31, 2017
		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
				(in thousands)							(in thousands)
Goodwill		$	3,997						$	3,997
Proprietary rights	5.1	$	5,973	$	(3,430	)	2,543		$	5,810	$	(3,003	)	2,807
Customer relationships	4.1	4,835		(2,206		)	2,629		4,679		(1,656		)	3,023
Patents	5.2	1,663		(705		)	958		1,608		(558		)	1,050
Trade name	8.6	889		(36		)	853		884		(27		)	857
Developed technology	8.2	1,430		(262		)	1,168		1,430		(155		)	1,275
Amortizable intangible assets		$	14,790	$	(6,639	)	$	8,151	$	14,411	$	(5,399	)	$	9,012

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of October 31, 2017, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31 (in thousands):
2018	$	364
2019	1,458
2020	1,458
2021	1,310
2022	838
2023 and thereafter	2,723
Total	$	8,151