Accounts Receivable Agreements (Details) - USD ($)	3 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accounts receivable agreement percent of sold receivables advanced, deduction	1.50%
Fixed charge coverage ratio, minimum requirement	1.25
Restricted cash	$ 581,000		$ 334,000
Certain Receivables to Unrelated Third-parties
Accounts, Notes, Loans and Financing Receivable [Line Items]
Maximum credit purchase capacity	8,500,000	$ 4,500,000
Increase in maximum credit purchase capacity	$ 500,000
Accounts receivable agreement, percent of sold receivables advanced	90.00%
Accounts receivable agreement, reserve of sold receivables, percent	10.00%
Accounts receivable agreement percent of sold receivables advanced, deduction	1.60%
Maximum limit of receivables uncollected	$ 13,000,000.0
Proceeds from collection of finance receivables	7,800,000	5,000,000.0
Certain Receivables to Unrelated Third-parties | Other Nonoperating Income (Expense)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Cost of selling receivables	100,000	$ 43,000
Uncollectible Receivables
Accounts, Notes, Loans and Financing Receivable [Line Items]
Thirty party financial institution reserve	$ 4,300,000