Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 1/31/15		January 31, 2015							January 31, 2014
			Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
					(in thousands)							(in thousands)
Goodwill			$	5,594						$	4,320
Proprietary rights		7.8	$	6,121	$	(2,240	)		3,881	$	3,577	$	(1,900	)		1,677
Customer relationships		5.8		6,613		(1,583	)		5,030		2,159		(1,057	)		1,102
Patents		6.6		2,243		(505	)		1,738		650		(318	)		332
Trade name		6.8		284		(102	)		182		177		(87	)		90
Amortizable intangible assets			$	15,261	$	(4,430	)	$	10,831	$	6,563	$	(3,362	)	$	3,201

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of January 31, 2015, future estimated amortization expense related to amortizable intangible assets is estimated to be (in thousands):

For fiscal years ending January 31:
2016	$	1,687
2017		1,646
2018		1,626
2019		1,327
2020		1,300
Thereafter		3,245
Total	$	10,831