Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
SEC Schedule, 12-09, Allowance, Credit Loss [Member]
Balance at Beginning of Period		$ 338	$ 338	$ 312
Additions - Charged to Costs and Expenses	[1]	285	0	50
Additions - Charged to Other Accounts	[2]	0	0	0
Deductions	[3]	27	0	24
Balance at End of Period		596	338	338
SEC Schedule, 12-09, Allowance, Notes Receivable [Member]
Balance at Beginning of Period		7,615	7,615	0
Additions - Charged to Costs and Expenses	[1]	0	0	7,615
Additions - Charged to Other Accounts	[2]	7,615	0	0
Deductions	[3]	0	0	0
Balance at End of Period		0	7,615	7,615
SEC Schedule, 12-09, Valuation Allowance, Deferred Tax Asset [Member]
Balance at Beginning of Period		1,960	1,695	520
Additions - Charged to Costs and Expenses	[1]	398	265	1,175
Additions - Charged to Other Accounts	[2]	0	0	0
Deductions	[3]	1,404	0	0
Balance at End of Period		$ 954	$ 1,960	$ 1,695

[1] Amounts charged to selling and general expenses or provision for income taxes from continuing operations.

[2] Amounts charged to other accounts. Charged to Gain on sale of assets, net of outstanding balance due. See Note L

[3] Principally bad debts written off, net of recoveries.