Share Based Compensation (Tables)

3 Months Ended

Apr. 30, 2021

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
	April 30, 2021		April 30, 2020
Cost of sales	$	76	$	80
Research and development expenses	273		374
Selling, general, and administrative expenses	1,385		1,042
Total share-based compensation expense	$	1,734	$	1,496