Share Based Compensation (Tables)

3 Months Ended

Apr. 30, 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
	April 30, 2020		April 30, 2019
Cost of sales	$	80	$	76
Research and development expenses	374		35
Selling, general, and administrative expenses	1,042		671
Total share-based compensation expense	$	1,496	$	782