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Summary of Significant Accounting Policies Financial Statements (Details) (USD $)
12 Months Ended 0 Months Ended 9 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Mar. 07, 2014
Sep. 30, 2014
Dec. 31, 2012
Dec. 31, 2011
Goodwill and Intangible Asset Impairment $ 0us-gaap_GoodwillAndIntangibleAssetImpairment $ 0us-gaap_GoodwillAndIntangibleAssetImpairment        
Participating Policies Additional Income Allocated, Percent 60.70%cia_ParticipatingPoliciesAdditionalIncomeAllocatedPercent 60.70%cia_ParticipatingPoliciesAdditionalIncomeAllocatedPercent        
Statutory deposit with state insurance departments 10,300,000cia_StatutoryDepositWithStateInsuranceDepartments 9,300,000cia_StatutoryDepositWithStateInsuranceDepartments        
Deferred acquisition costs 157,468,000us-gaap_DeferredPolicyAcquisitionCosts 146,691,000us-gaap_DeferredPolicyAcquisitionCosts     135,569,000us-gaap_DeferredPolicyAcquisitionCosts 124,542,000us-gaap_DeferredPolicyAcquisitionCosts
Minimum [Member]            
Annuity Credit Rate Associated with Amortization Method of Present Value of Future Insurance Profits 3.00%cia_AnnuityCreditRateAssociatedWithAmortizationMethodOfPresentValueOfFutureInsuranceProfits
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
         
Interest Accrual Rate Associated with Amortization Method of Present Value of Future Insurance Profits 4.00%us-gaap_InterestAccrualRateAssociatedWithAmortizationMethodOfPresentValueOfFutureInsuranceProfits
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
         
Maximum [Member]            
Annuity Credit Rate Associated with Amortization Method of Present Value of Future Insurance Profits 5.50%cia_AnnuityCreditRateAssociatedWithAmortizationMethodOfPresentValueOfFutureInsuranceProfits
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
         
Interest Accrual Rate Associated with Amortization Method of Present Value of Future Insurance Profits 8.25%us-gaap_InterestAccrualRateAssociatedWithAmortizationMethodOfPresentValueOfFutureInsuranceProfits
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
         
MGLIC [Member]            
Business Acquisition, Date of Acquisition Agreement     Mar. 07, 2014      
Payments to Acquire Businesses, Gross     5,200,000us-gaap_PaymentsToAcquireBusinessesGross
/ us-gaap_BusinessAcquisitionAxis
= cia_MGLICMember
     
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Assets     12,000,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedAssets
/ us-gaap_BusinessAcquisitionAxis
= cia_MGLICMember
     
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities     6,800,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedLiabilities
/ us-gaap_BusinessAcquisitionAxis
= cia_MGLICMember
     
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Net     5,200,000us-gaap_BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
/ us-gaap_BusinessAcquisitionAxis
= cia_MGLICMember
     
Goodwill, Acquired During Period       $ 100,000us-gaap_GoodwillAcquiredDuringPeriod
/ us-gaap_BusinessAcquisitionAxis
= cia_MGLICMember