Long-Term Debt (Details) - 2012 Debenture - 9½% Subordinated Debentures Due 2012 [Member] - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Long-Term Debt (Details) - 2012 Debenture [Line Items]
Long-Term Debt	$ 220,000	$ 220,000
Interest Payable, Current	$ 258,000	$ 253,000

Amount, excluding unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Name:	us-gaap_LongTermDebt
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant