Statutory Financial Information of Insurance Subsidiaries (Net income (loss) Capital and Surplus (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Repwest [Member]
Statutory financial information of insurance subsidiaries:
Audit statutory net income (loss)	$ 33,314	$ 22,898	$ 28,614
Audited statutory capital and surplus	266,875	227,380	226,999
ARCOA [Member]
Statutory financial information of insurance subsidiaries:
Audit statutory net income (loss)	(752)	2,438	2,906
Audited statutory capital and surplus	14,697	15,928	12,851
Oxford [Member]
Statutory financial information of insurance subsidiaries:
Audit statutory net income (loss)	23,217	6,296	18,599
Audited statutory capital and surplus	230,202	218,301	223,264
CFLIC [Member]
Statutory financial information of insurance subsidiaries:
Audit statutory net income (loss)	6,019	8,082	8,043
Audited statutory capital and surplus	17,098	25,980	26,305
NAI [Member]
Statutory financial information of insurance subsidiaries:
Audit statutory net income (loss)	1,874	2,127	1,942
Audited statutory capital and surplus	$ 7,961	$ 13,980	$ 13,371