Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jul. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 7/31/17		July 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		5.4	$	5,975	$	(3,311	)		2,664	$	5,810	$	(3,003	)		2,807
Customer relationships		4.3		4,857		(2,050	)		2,807		4,679		(1,656	)		3,023
Patents		5.4		1,671		(666	)		1,005		1,608		(558	)		1,050
Trade name		8.8		889		(33	)		856		884		(27	)		857
Developed technology		8.4		1,430		(226	)		1,204		1,430		(155	)		1,275
Amortizable intangible assets			$	14,822	$	(6,286	)	$	8,536	$	14,411	$	(5,399	)	$	9,012

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

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

For fiscal years ending January 31 (in thousands):
2018	$	774
2019		1,462
2020		1,462
2021		1,307
2022		841
2023 and thereafter		2,690
Total	$	8,536