Goodwill and Other Intangible Assets (Tables)

3 Months Ended

Apr. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Remaining Life at 4/30/2015		April 30, 2015							January 31, 2015
			Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
			(in thousands)							(in thousands)
Goodwill			$	5,620						$	5,594
Proprietary rights		7.7	$	6,285	$	(2,384	)	$	3,901	$	6,121	$	(2,240	)		3,881
Customer relationships		5.6		6,805		(1,873	)		4,932		6,613		(1,583	)		5,030
Patents		6.4		2,306		(603	)		1,703		2,243		(505	)		1,738
Trade name		6.5		295		(115	)		180		284		(102	)		182
Amortizable intangible assets			$	15,691	$	(4,975	)	$	10,716	$	15,261	$	(4,430	)	$	10,831

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of April 30, 2015, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31 (in thousands):
2016	$	1,332
2017		1,694
2018		1,673
2019		1,359
2020		1,331
2021 and thereafter		3,327
Total	$	10,716