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Income Taxes - Narrative (Details) - USD ($)
 1 Months Ended 3 Months Ended
Mar. 27, 2020
Dec. 31, 2020
Oct. 31, 2020
Jul. 31, 2021
Oct. 31, 2021
Operating Loss Carryforwards [Line Items]          
Valuation allowance on deferred tax assets     $ 540,000   $ 1,324,000
Operating loss carryforwards         6,312,000
Unrecognized tax benefits     0   0
Income tax examination, penalties and interest accrued         0
COVID-19          
Operating Loss Carryforwards [Line Items]          
Discrete tax benefit $ 1,948,000        
Income tax refund $ 5,801,000        
Proceeds from income tax refund   $ 4,960,000 $ 841,000 $ 948,000  
Federal          
Operating Loss Carryforwards [Line Items]          
Operating loss carryforwards         $ 17,443,000
Net operating loss carryforward limitation as a percent of taxable income         80.00%
Disallowed interest expense carryforwards         $ 0
State          
Operating Loss Carryforwards [Line Items]          
Operating loss carryforwards         21,277,000
Disallowed interest expense carryforwards         $ 2,065,000