Schedule of Fair Value of Investments Held to Maturity Based on Level 2 Inputs (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Net Investment Income [Line Items]
Fair Value	$ 5,294	$ 5,289
Corporate Bond Securities [Member]
Net Investment Income [Line Items]
Fair Value	2,227	3,277
Fixed Income Funds [Member]
Net Investment Income [Line Items]
Fair Value	2,619	1,571
Money Market Funds [Member]
Net Investment Income [Line Items]
Fair Value	448	441
Fair Value, Inputs, Level 2 [Member]
Net Investment Income [Line Items]
Fair Value	5,294	5,289
Fair Value, Inputs, Level 2 [Member] | Corporate Bond Securities [Member]
Net Investment Income [Line Items]
Fair Value	2,227	3,277
Fair Value, Inputs, Level 2 [Member] | Fixed Income Funds [Member]
Net Investment Income [Line Items]
Fair Value	2,619	1,571
Fair Value, Inputs, Level 2 [Member] | Money Market Funds [Member]
Net Investment Income [Line Items]
Fair Value	$ 448	$ 441