Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 1/31/17		January 31, 2017							January 31, 2016
			Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
			(in thousands)									(in thousands)
Goodwill			$	3,997						$	4,155
Proprietary rights		5.9	$	5,810	$	(3,003	)		2,807	$	5,959	$	(2,645	)		3,314
Customer relationships		4.8		4,679		(1,656	)		3,023		4,633		(1,006	)		3,627
Patents		5.9		1,608		(558	)		1,050		1,592		(369	)		1,223
Trade name		9.3		884		(27	)		857		883		(17	)		866
Customer backlog		0.0		20		(20	)		—		20		(2	)		18
Developed technology		8.9		1,430		(155	)		1,275		1,430		(12	)		1,418
Amortizable intangible assets			$	14,431	$	(5,419	)	$	9,012	$	14,517	$	(4,051	)	$	10,466

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of January 31, 2017, future estimated amortization expense related to amortizable intangible assets is estimated to be (in thousands):

For fiscal years ending January 31:
2018	$	1,417
2019		1,417
2020		1,417
2021		1,273
2022		815
Thereafter		2,673
Total	$	9,012