Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 1/31/16		January 31, 2016							January 31, 2015
			Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
					(in thousands)							(in thousands)
Goodwill			$	4,155						$	5,594
Proprietary rights		6.8	$	5,959	$	(2,645	)		3,314	$	6,121	$	(2,240	)		3,881
Customer relationships		5.8		4,633		(1,006	)		3,627		6,613		(1,583	)		5,030
Patents		6.8		1,592		(369	)		1,223		2,243		(505	)		1,738
Trade name		10.3		883		(17	)		866		284		(102	)		182
Customer backlog		0.9		20		(2	)		18		—		—			—
Developed technology		9.9		1,430		(12	)		1,418		—		—			—
Amortizable intangible assets			$	14,517	$	(4,051	)	$	10,466	$	15,261	$	(4,430	)	$	10,831

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of January 31, 2016, future estimated amortization expense related to amortizable intangible assets is estimated to be (in thousands):

For fiscal years ending January 31:
2017	$	1,457
2018		1,418
2019		1,418
2020		1,418
2021		1,267
Thereafter		3,488
Total	$	10,466