Goodwill and Other Intangible Assets (Tables)

12 Months Ended

Jan. 31, 2013

Goodwill and Other Intangible Assets [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 1/31/13		January 31, 2013							January 31, 2012
			Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
			(in thousands)							(in thousands)
Goodwill			$	4,320						$	4,320
Proprietary rights		7.4	$	3,503	$	(1,625	)		1,878	$	3,532	$	(1,347	)	$	2,185
Customer relationships		5.1		2,402		(876	)		1,526		2,387		(572	)		1,815
Patents		5.1		724		(264	)		460		719		(172	)		547
Trade name		5.1		197		(72	)		125		196		(47	)		149
Amortizable intangible assets			$	6,826	$	(2,837	)	$	3,989	$	6,834	$	(2,138	)	$	4,696

Future estimated amortization expense related to amortizable intangible assets

For fiscal years ending January 31:
2014	$	671
2015		671
2016		671
2017		671
2018		671
Thereafter		634
Total	$	3,989