Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jul. 31, 2014

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Remaining Life at 7/31/2014		July 31, 2014							January 31, 2014
			Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
			(in thousands)							(in thousands)
Goodwill			$	5,703						$	4,320
Proprietary rights		8.4	$	6,546	$	(2,102	)	$	4,444	$	3,577	$	(1,900	)		1,677
Customer relationships		6.3		7,336		(1,332	)		6,004		2,159		(1,057	)		1,102
Patents		7.1		2,482		(409	)		2,073		650		(318	)		332
Trade name		7.2		322		(102	)		220		177		(87	)		90
Amortizable intangible assets			$	16,686	$	(3,945	)	$	12,741	$	6,563	$	(3,362	)	$	3,201

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of July 31, 2014, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31 (in thousands):
2015	$	926
2016		1,852
2017		1,809
2018		1,787
2019		1,438
2020 and thereafter		4,929
Total	$	2,741