Share Based Compensation (Tables)

9 Months Ended

Oct. 31, 2020

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Line Items]

Share-based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]

The share-based compensation expense was as follows:

	Three Months Ended				Nine Months Ended
	October 31, 2020		October 31, 2019		October 31, 2020		October 31, 2019
Cost of sales	$	64	$	98	$	182	$	273
Research and development expenses	369		41		1,126		122
Selling, general, and administrative expenses	936		852		3,670		3,144
Total share-based compensation expense	$	1,369	$	991	$	4,978	$	3,539