Inventories, Contracts in Progress and Vehicle Floor Plan Payable (Narrative) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Jul. 05, 2022
Inventory [Line Items]
Weighted average interest rate	4.90%	4.80%	4.60%	4.90%
Automotive [Member]
Inventory [Line Items]
Borrowing capacity	$ 100,900,000		$ 100,900,000
Vehicle floor plan payable	55,000,000		55,000,000
Floor plan assistance	$ 1,400,000	$ 700,000	$ 3,400,000	$ 2,100,000
Truist Floor Plan Facility [Member] | Automotive [Member]
Inventory [Line Items]
Borrowing capacity					$ 80,000,000
Truist Floor Plan Facility [Member] | Automotive [Member] | Secured Overnight Financing Rates (SOFR) [Member]
Inventory [Line Items]
Applicable interest rate margin			1.19%
Ford Floor Plan Facility [Member] | Automotive [Member] | Prime Rate [Member]
Inventory [Line Items]
Applicable interest rate margin			1.50%
Vehicle Floor Plan Facility [Member] | Automotive [Member]
Inventory [Line Items]
Weighted average interest rate	3.50%	0.90%	2.60%	1.10%
Minimum [Member] | Ford Floor Plan Facility [Member] | Automotive [Member] | Prime Rate [Member]
Inventory [Line Items]
Interest rate	3.50%		3.50%