Assets Held for Sale and Discontinued Operations - Schedule of Discontinued Operations, Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 30, 2021	Apr. 30, 2020
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Recovery of doubtful accounts	$ (453)	$ 0
Net loss	(283)	(215)
Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from discontinued operations	30	4,188
Cost of discontinued operations	373	2,484
Selling, general and administrative	342	1,700
Recovery of doubtful accounts	(443)	0
Depreciation and amortization	1	44
Total operating expenses	(100)	1,744
Operating loss	(243)	(40)
Other income (expenses)	(39)
Other income (expenses)		3
Loss before income taxes	(282)	(37)
Provision for income taxes	(1)	(178)
Net loss	$ (283)	$ (215)