Investments (Schedule of aggregate fair value and gross unrealized loss) (Details) - Fixed income securities [Member] - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Fair Value	$ 128,694	$ 12,908
Less than 12 months Gross Unrealized Losses	(2,197)	(191)
Greater than 12 months Fair Value	4,762	4,922
Greater than 12 months Gross Unrealized Losses	(102)	(105)
Fair Value, Total	133,456	17,830
Gross Unrealized Losses, Total	(2,299)	(296)
U.S. Government and agencies [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Fair Value	3,125	931
Less than 12 months Gross Unrealized Losses	(87)	(6)
Greater than 12 months Fair Value
Greater than 12 months Gross Unrealized Losses
Fair Value, Total	3,125	931
Gross Unrealized Losses, Total	(87)	(6)
States, territories and possessions and political subdivisions [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Fair Value	19,769	1,806
Less than 12 months Gross Unrealized Losses	(350)	(35)
Greater than 12 months Fair Value	222
Greater than 12 months Gross Unrealized Losses	(3)
Fair Value, Total	19,991	1,806
Gross Unrealized Losses, Total	(353)	(35)
Corporate securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Fair Value	46,816	3,215
Less than 12 months Gross Unrealized Losses	(1,015)	(97)
Greater than 12 months Fair Value	1,895	734
Greater than 12 months Gross Unrealized Losses	(54)	(50)
Fair Value, Total	48,711	3,949
Gross Unrealized Losses, Total	(1,069)	(147)
Residential mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Fair Value	17,407	68
Less than 12 months Gross Unrealized Losses	(261)	(1)
Greater than 12 months Fair Value	1,434
Greater than 12 months Gross Unrealized Losses	(39)
Fair Value, Total	18,841	68
Gross Unrealized Losses, Total	(300)	(1)
Commercial mortgage-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Fair Value	11,287	1,103
Less than 12 months Gross Unrealized Losses	(160)	(21)
Greater than 12 months Fair Value	216
Greater than 12 months Gross Unrealized Losses	(1)
Fair Value, Total	11,503	1,103
Gross Unrealized Losses, Total	(161)	(21)
Asset-backed securities [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Fair Value	28,797	5,785
Less than 12 months Gross Unrealized Losses	(308)	(31)
Greater than 12 months Fair Value	995	4,188
Greater than 12 months Gross Unrealized Losses	(5)	(55)
Fair Value, Total	29,792	9,973
Gross Unrealized Losses, Total	(313)	$ (86)
Redeemable Preferred Stock [Member]
Debt Securities, Available-for-sale [Line Items]
Less than 12 months Fair Value	1,493
Less than 12 months Gross Unrealized Losses	(16)
Greater than 12 months Fair Value
Greater than 12 months Gross Unrealized Losses
Fair Value, Total	1,493
Gross Unrealized Losses, Total	$ (16)

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale), in continuous unrealized loss position for more than 12 months, without allowance for credit loss. Includes beneficial interest in securitized financial asset.

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