Investments, Summary of Realized Investment Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Summary of realized investment gains (losses) [Abstract]
Gains	$ 183	$ 1,220	$ 432	$ 3,215
Losses	0	(1,650)	0	(1,650)
Realized investment gains (losses), net	183	(430)	432	1,565
Fixed Maturities [Member]
Summary of realized investment gains (losses) [Abstract]
Gains	95	1,112	344	1,994
Losses	0	(1,650)	0	(1,650)
Realized investment gains (losses), net	95	(538)	344	344
Equity Securities [Member]
Summary of realized investment gains (losses) [Abstract]
Gains	88	108	88	1,221
Losses	0	0	0	0
Realized investment gains (losses), net	88	108	88	1,221
Other Invested Assets [Member]
Summary of realized investment gains (losses) [Abstract]
Gains	0	0	0	0
Losses	0	0	0	0
Realized investment gains (losses), net	$ 0	$ 0	$ 0	$ 0