Acquisitions (Details 1) $ in Thousands	Jan. 31, 2020 USD ($)
Business Combinations [Abstract]
Trade accounts receivable	$ 142
Other current assets	21
Property, plant and equipment	84
Goodwill	1,437
Non-compete agreement (4-year useful life)	50
Customer relationships (7-year useful life)	130
Tradename (2-year useful life)	30
Deferred income tax assets	118
Other assets	10
Trade accounts payable	(302)
Accrued expenses	(136)
Other current liabilities	(408)
Other liabilities	(351)
Net assets acquired	$ 825