Assets Held for Sale and Discontinued Operations - Schedule of Discontinued Operations, Income Statement (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Operating expenses:
Loss on disposal (including $2,745 of cumulative translation loss)			$ 0	$ (1,859)
Net income (loss)	$ 79	$ (4,708)	(204)	(4,923)
Discontinued Operations, Held-for-sale
Revenues:
Revenue from discontinued operations	757	1,230	787	5,418
Cost of sales:
Cost of discontinued operations	332	1,642	705	4,126
Operating expenses:
Selling, general and administrative	378	1,476	720	3,176
Recovery of doubtful accounts	(2)		(445)
Provision for doubtful accounts		470		470
Depreciation and amortization	2	41	3	85
Total operating expenses	378	1,987	278	3,731
Operating income (loss)	47	(2,399)	(196)	(2,439)
Other income (expenses)	35	72		75
Other income (expenses)			(4)
Loss on disposal (including $2,745 of cumulative translation loss)	0	(1,859)	0	(1,859)
Cumulative translation loss		2,745		2,745
Income (loss) before income taxes	82	(4,186)	(200)	(4,223)
Provision for income taxes	(3)	(522)	(4)	(700)
Net income (loss)	$ 79	$ (4,708)	$ (204)	$ (4,923)