Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Oct. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 10/31/16		October 31, 2016							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		6.2	$	5,803	$	(2,865	)		2,938	$	5,959	$	(2,645	)		3,314
Customer relationships		5.1		4,738		(1,516	)		3,222		4,633		(1,006	)		3,627
Patents		6.1		1,629		(523	)		1,106		1,592		(369	)		1,223
Trade name		9.6		886		(24	)		862		883		(17	)		866
Customer backlog		0.2		20		(17	)		3		20		(2	)		18
Developed technology		9.2		1,430		(119	)		1,311		1,430		(12	)		1,418
Amortizable intangible assets			$	14,506	$	(5,064	)	$	9,442	$	14,517	$	(4,051	)	$	10,466

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of October 31, 2016, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31 (in thousands):
2017	$	402
2018		1,424
2019		1,424
2020		1,424
2021		1,275
2022 and thereafter		3,493
Total	$	9,442