Acquired Intangible Assets (Tables)

3 Months Ended

Apr. 30, 2017

Goodwill And Intangible Assets Disclosure [Abstract]

Carrying Value of Intangible Assets

The following table reflects the carrying value of intangible assets as of April 30, 2017: 

	Cost		Accumulated Amortization			Net Book Value
Intellectual property	$	3,505	$	(1,899	)	$	1,606
Access to facilities contract		38		(38	)		—
Total	$	3,543	$	(1,937	)	$	1,606

The following table reflects the carrying value of intangible assets as of January 31, 2017:

	Cost		Accumulated Amortization			Net Book Value
Intellectual property	$	3,505	$	(1,811	)	$	1,694
Access to facilities contract		38		(38	)		—
Total	$	3,543	$	(1,849	)	$	1,694