CONSOLIDATED STATEMENTS OF OPERATIONS (Parentheticals) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Income Statement [Abstract]
Cost of sales, related parties	$ 4,887	$ 43,469	$ 17,159	$ 90,207
Selling, general and administrative expenses, related parties	$ 152	$ (348)	$ (145)	$ (335)