Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Income Tax Disclosure [Abstract]
Income tax expense (benefit)	$ 197,000	$ (530,000)	$ 52,000	$ (188,000)
Pre-tax net loss	2,542,000	$ 2,426,000	6,388,000	8,511,000
Deferred tax liability associated with the undistributed foreign earnings	$ 0		0
Tax expense or benefit related to uncertain tax positions			$ 0	$ 0