Goodwill and Other Intangible Assets (Tables)

6 Months Ended

Jul. 31, 2016

Goodwill and Intangible Assets Disclosure [Abstract]

Goodwill and Other Intangible Assets

	Weighted Average Life at 7/31/16		July 31, 2016							January 31, 2016
			Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
			(in thousands)							(in thousands)
Goodwill			$	4,155						$	4,155
Proprietary rights		6.5	$	6,013	$	(2,845	)		3,168	$	5,959	$	(2,645	)		3,314
Customer relationships		5.3		4,905		(1,403	)		3,502		4,633		(1,006	)		3,627
Patents		6.3		1,688		(498	)		1,190		1,592		(369	)		1,223
Trade name		9.8		891		(23	)		868		883		(17	)		866
Customer backlog		0.4		20		(12	)		8		20		(2	)		18
Developed technology		9.4		1,430		(83	)		1,347		1,430		(12	)		1,418
Amortizable intangible assets			$	14,947	$	(4,864	)	$	10,083	$	14,517	$	(4,051	)	$	10,466

Future Estimated Amortization Expense Related to Amortizable Intangible Assets

As of July 31, 2016, future estimated amortization expense related to amortizable intangible assets was estimated to be:

For fiscal years ending January 31 (in thousands):
2017	$	1,037
2018		1,470
2019		1,470
2020		1,470
2021		1,295
2022 and thereafter		3,341
Total	$	10,083