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, 2020	Jul. 31, 2019	Jul. 31, 2020	Jul. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on disposal (including $2,745 of cumulative translation loss)			$ (1,859)	$ 0
Net loss	$ (4,708)	$ (1,643)	(4,923)	(1,861)
Discontinued Operations, Held-for-sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue from discontinued operations	1,230	2,077	5,418	5,891
Cost of discontinued operations	1,642	2,002	4,126	4,514
Selling, general and administrative	1,476	1,415	3,176	2,890
Provision for doubtful accounts	470	0	470	0
Depreciation and amortization	41	46	85	95
Total operating expenses	1,987	1,461	3,731	2,985
Operating loss	(2,399)	(1,386)	(2,439)	(1,608)
Other income (expenses)	72		75
Other income (expenses)		(163)		(106)
Loss on disposal (including $2,745 of cumulative translation loss)	(1,859)	0	(1,859)	0
Cumulative translation loss	2,745		2,745
Loss before income taxes	(4,186)	(1,549)	(4,223)	(1,714)
Provision for income taxes	(522)	(94)	(700)	(147)
Net loss	$ (4,708)	$ (1,643)	$ (4,923)	$ (1,861)