Commitments and Contingencies (Details) - Charitable Gift [Member] $ in Thousands	9 Months Ended
	Oct. 31, 2020 USD ($)
Loss Contingencies [Line Items]
Long-term Purchase Commitment, Amount	$ 5,000
Loss Contingency Accrual	2,682
Cumulative Loss Contingency Accrual, Payments	2,145
Accrued Liabilities [Member]
Loss Contingencies [Line Items]
Loss Contingency, Accrual, Current	710
Other Noncurrent Liabilities [Member]
Loss Contingencies [Line Items]
Loss Contingency, Accrual, Noncurrent	$ 1,972