Summary of Significant Accounting Policies Financial Statements (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Subpart F Income	$ 18,403	$ 0	$ 0
Statutory deposits with state insurance departments	$ 9,500	$ 9,800

The fair value of the asset transferred to a third party to serve as a deposit, which typically serves as a security against failure by the transferor to continue operations, as required by state regulators.

No definition available.

Name:	cia_StatutoryDepositWithStateInsuranceDepartments
Namespace Prefix:	cia_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant