Goodwill and Other Intangible Assets (Tables)

9 Months Ended

Oct. 31, 2012

Goodwill and Other Intangible Assets [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Remaining Life at 10/31/12		October 31, 2012							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		7.6	$	3,535	$	(1,564	)	$	1,971	$	3,532	$	(1,347	)	$	2,185
Customer relationships		5.3		2,401		(800	)		1,601		2,387		(572	)		1,815
Patents		5.3		723		(241	)		482		719		(172	)		547
Trade name		5.3		197		(66	)		131		196		(47	)		149
Amortizable intangible assets			$	6,856	$	(2,671	)	$	4,185	$	6,834	$	(2,138	)	$	4,696

Amortization expense related to amortizable intangible assets

As of October 31, 2012, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31 (in thousands):
2013	$	172
2014		673
2015		673
2016		673
2017		673
2018 and thereafter		1,321
Total	$	4,185