Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Apr. 30, 2013

Goodwill and Other Intangible Assets [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Remaining Life at 4/30/2013		April 30, 2013							January 31, 2013
			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		7.2	$	3,481	$	(1,657	)	$	1,824	$	3,503	$	(1,625	)		1,878
Customer relationships		4.8		2,383		(943	)		1,440		2,402		(876	)		1,526
Patents		4.8		718		(284	)		434		724		(264	)		460
Trade name		4.8		196		(79	)		117		197		(72	)		125
Amortizable intangible assets			$	6,778	$	(2,963	)	$	3,815	$	6,826	$	(2,837	)	$	3,989

Future estimated amortization expense related to amortizable intangible assets

For fiscal years ending January 31 (in thousands):
2014	$	499
2015		665
2016		665
2017		665
2018		665
2019 and thereafter		656
Total	$	3,815