Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Income Taxes (Details) [Line Items]
Income Tax Expense (Benefit)	$ (3,677)	$ (4,046)	$ (3,648)	$ (9,359)
CARES Act Net Operating Loss Carryback [Member]
Income Taxes (Details) [Line Items]
Income Tax Expense (Benefit), Continuing Operations, Adjustment of Deferred Tax (Asset) Liability				$ (1,800)