Revenue - Estimated Revenue Expected to be Recognized in Future Periods Related to Performance Obligations (Details) $ in Thousands	Oct. 31, 2020 USD ($)
Revenue from Contract with Customer [Abstract]
Performance obligations expected timing of satisfaction	$ 69
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2020-11-01
Revenue from Contract with Customer [Abstract]
Performance obligations expected timing of satisfaction	$ 69
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied, period	3 months
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2021-02-01
Revenue from Contract with Customer [Abstract]
Performance obligations expected timing of satisfaction	$ 274
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied, period	1 year
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2022-02-01
Revenue from Contract with Customer [Abstract]
Performance obligations expected timing of satisfaction	$ 799
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Line Items]
Performance obligation expected to be satisfied, period