Assets and Liabilities Measured at Fair Value - Summary of Assets Carried at Fair Value on Recurring and Non-recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Recurring fair value measurements
Fixed maturities	$ 298,378	$ 352,383
Fair Value, Measurements, Recurring
Recurring fair value measurements
Fixed maturities	298,378	352,383
Total recurring assets	298,378	352,383
Fair Value, Measurements, Recurring | Level 1
Recurring fair value measurements
Fixed maturities	2,637	2,821
Total recurring assets	2,637	2,821
Fair Value, Measurements, Recurring | Level 2
Recurring fair value measurements
Fixed maturities	264,480	321,486
Total recurring assets	264,480	321,486
Fair Value, Measurements, Recurring | Level 3
Recurring fair value measurements
Fixed maturities	31,261	28,076
Total recurring assets	31,261	28,076
U.S. Government and Agencies
Recurring fair value measurements
Fixed maturities	9,823	11,901
U.S. Government and Agencies | Fair Value, Measurements, Recurring
Recurring fair value measurements
Fixed maturities	9,823	11,901
U.S. Government and Agencies | Fair Value, Measurements, Recurring | Level 2
Recurring fair value measurements
Fixed maturities	9,823	11,901
U.S. Agency Mortgage-backed
Recurring fair value measurements
Fixed maturities	8,071	13,679
U.S. Agency Mortgage-backed | Fair Value, Measurements, Recurring
Recurring fair value measurements
Fixed maturities	8,071	13,679
U.S. Agency Mortgage-backed | Fair Value, Measurements, Recurring | Level 2
Recurring fair value measurements
Fixed maturities	8,071	13,679
State and Political Subdivisions
Recurring fair value measurements
Fixed maturities	49,705	60,470
State and Political Subdivisions | Fair Value, Measurements, Recurring
Recurring fair value measurements
Fixed maturities	49,705	60,470
State and Political Subdivisions | Fair Value, Measurements, Recurring | Level 2
Recurring fair value measurements
Fixed maturities	49,248	59,972
State and Political Subdivisions | Fair Value, Measurements, Recurring | Level 3
Recurring fair value measurements
Fixed maturities	457	498
Corporate and Miscellaneous
Recurring fair value measurements
Fixed maturities	161,335	184,498
Corporate and Miscellaneous | Fair Value, Measurements, Recurring
Recurring fair value measurements
Fixed maturities	161,335	184,498
Corporate and Miscellaneous | Fair Value, Measurements, Recurring | Level 1
Recurring fair value measurements
Fixed maturities	2,637	2,821
Corporate and Miscellaneous | Fair Value, Measurements, Recurring | Level 2
Recurring fair value measurements
Fixed maturities	130,772	156,937
Corporate and Miscellaneous | Fair Value, Measurements, Recurring | Level 3
Recurring fair value measurements
Fixed maturities	27,926	24,740
Foreign Government
Recurring fair value measurements
Fixed maturities	136	414
Foreign Government | Fair Value, Measurements, Recurring
Recurring fair value measurements
Fixed maturities	136	414
Foreign Government | Fair Value, Measurements, Recurring | Level 2
Recurring fair value measurements
Fixed maturities	136	414
Residential Mortgage-backed
Recurring fair value measurements
Fixed maturities	5,519	6,069
Residential Mortgage-backed | Fair Value, Measurements, Recurring
Recurring fair value measurements
Fixed maturities	5,519	6,069
Residential Mortgage-backed | Fair Value, Measurements, Recurring | Level 2
Recurring fair value measurements
Fixed maturities	5,519	6,069
Commercial Mortgage-backed
Recurring fair value measurements
Fixed maturities	19,174	20,815
Commercial Mortgage-backed | Fair Value, Measurements, Recurring
Recurring fair value measurements
Fixed maturities	19,174	20,815
Commercial Mortgage-backed | Fair Value, Measurements, Recurring | Level 2
Recurring fair value measurements
Fixed maturities	19,174	20,815
Asset-backed
Recurring fair value measurements
Fixed maturities	44,615	54,537
Asset-backed | Fair Value, Measurements, Recurring
Recurring fair value measurements
Fixed maturities	44,615	54,537
Asset-backed | Fair Value, Measurements, Recurring | Level 2
Recurring fair value measurements
Fixed maturities	41,737	51,699
Asset-backed | Fair Value, Measurements, Recurring | Level 3
Recurring fair value measurements
Fixed maturities	$ 2,878	$ 2,838