Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Accounts Receivable [Abstract]
Finance contracts maximum funding period	30 days
Total accounts receivable	$ 28,636	$ 18,614
Less - allowance for doubtful accounts	(107)	(135)
Total accounts receivable, net	28,529	18,479
Contracts in Transit [Member]
Accounts Receivable [Abstract]
Total accounts receivable	16,666	13,532
Trade and Other Accounts Receivable [Member]
Accounts Receivable [Abstract]
Total accounts receivable	6,083	1,023
Manufacturer Receivable [Member]
Accounts Receivable [Abstract]
Total accounts receivable	$ 5,887	$ 4,059