Policyholders' Liabilities - Guaranteed Minimum Crediting Rate (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 207,702	$ 196,069
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0149
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 36,816	$ 40,496
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0149 | Minimum [Member]
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	0.00%	0.00%
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0149 | Maximum [Member]
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	1.49%	1.49%
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0150 To 0299
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 33,793	$ 24,837
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0150 To 0299 | Minimum [Member]
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	1.50%	1.50%
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0150 To 0299 | Maximum [Member]
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	2.99%	2.99%
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0300 To 0449
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 105,693	$ 98,911
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0300 To 0449 | Minimum [Member]
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	3.00%	3.00%
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0300 To 0449 | Maximum [Member]
Policyholder Account Balance [Line Items]
Policyholder Account Balance, Guaranteed Minimum Credit Rating	4.49%	4.49%
Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From Greater Than Or Equal To 0450
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 31,400	$ 31,825
Policyholder Account Balance, Guaranteed Minimum Credit Rating	4.50%	4.50%
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 170,941	$ 155,618
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0149
Policyholder Account Balance [Line Items]
Policyholder Account Balance	784	736
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0150 To 0299
Policyholder Account Balance [Line Items]
Policyholder Account Balance	33,073	24,155
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0300 To 0449
Policyholder Account Balance [Line Items]
Policyholder Account Balance	105,684	98,902
Policyholder Account Balance, at Guaranteed Minimum Crediting Rate | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From Greater Than Or Equal To 0450
Policyholder Account Balance [Line Items]
Policyholder Account Balance	31,400	31,825
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050
Policyholder Account Balance [Line Items]
Policyholder Account Balance	680	640
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0149
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0150 To 0299
Policyholder Account Balance [Line Items]
Policyholder Account Balance	671	631
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0300 To 0449
Policyholder Account Balance [Line Items]
Policyholder Account Balance	9	9
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0001 to 0050 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From Greater Than Or Equal To 0450
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150
Policyholder Account Balance [Line Items]
Policyholder Account Balance	1,195	1,140
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0149
Policyholder Account Balance [Line Items]
Policyholder Account Balance	1,146	1,089
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0150 To 0299
Policyholder Account Balance [Line Items]
Policyholder Account Balance	49	51
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0300 To 0449
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0051 to 0150 | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From Greater Than Or Equal To 0450
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater
Policyholder Account Balance [Line Items]
Policyholder Account Balance	34,886	38,671
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0000 To 0149
Policyholder Account Balance [Line Items]
Policyholder Account Balance	34,886	38,671
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0150 To 0299
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From 0300 To 0449
Policyholder Account Balance [Line Items]
Policyholder Account Balance	0	0
Policyholder Account Balance, above Guaranteed Minimum Crediting Rate, Range from 0151 and Greater | Policyholder Account Balance, Guaranteed Minimum Crediting Rate, Range From Greater Than Or Equal To 0450
Policyholder Account Balance [Line Items]
Policyholder Account Balance	$ 0	$ 0