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Segment Reporting - Reconcilation of Revenues From Segments to Consolidated (Details) (USD $)
3 Months Ended 12 Months Ended
Dec. 31, 2014
Sep. 30, 2014
Jun. 30, 2014
Mar. 31, 2014
Dec. 31, 2013
Sep. 30, 2013
Jun. 30, 2013
Mar. 31, 2013
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Notes to Financial Statements                      
Insurance company operation                 $ 27,466,597UNAM_TotalInsuranceCompanyRevenues $ 27,806,086UNAM_TotalInsuranceCompanyRevenues $ 29,336,197UNAM_TotalInsuranceCompanyRevenues
Revenues from other insurance operations                 11,991,554UNAM_OtherRevenuesFromInsuranceOperations 11,874,171UNAM_OtherRevenuesFromInsuranceOperations 12,342,113UNAM_OtherRevenuesFromInsuranceOperations
Intersegment revenue eliminations (1)                 (8,897,911)UNAM_IntersegmentRevenueEliminations (8,549,365)UNAM_IntersegmentRevenueEliminations (8,921,740)UNAM_IntersegmentRevenueEliminations
Revenues from other insurance operations net of intersegment eliminations                 3,003,643UNAM_OtherRevenuesOtherInsuranceOperationNetOfIntersegmentEliminations 3,324,806UNAM_OtherRevenuesOtherInsuranceOperationNetOfIntersegmentEliminations 3,420,373UNAM_OtherRevenuesOtherInsuranceOperationNetOfIntersegmentEliminations
Total revenues 7,643,578us-gaap_Revenues 7,764,783us-gaap_Revenues 7,621,768us-gaap_Revenues 7,440,111us-gaap_Revenues 7,735,148us-gaap_Revenues 7,682,727us-gaap_Revenues 7,763,234us-gaap_Revenues 7,949,783us-gaap_Revenues 30,470,240us-gaap_Revenues 31,130,892us-gaap_Revenues 32,756,570us-gaap_Revenues
Income before taxes from insurance company operation                 3,552,323UNAM_IncomeBeforeTaxesFromInsuranceCompanyOperations 3,276,209UNAM_IncomeBeforeTaxesFromInsuranceCompanyOperations 5,369,206UNAM_IncomeBeforeTaxesFromInsuranceCompanyOperations
Income before taxes from other insurance operations                 (2,255,818)UNAM_IncomeBeforeTaxesFromOtherInsuranceOperations (2,035,434)UNAM_IncomeBeforeTaxesFromOtherInsuranceOperations (2,514,170)UNAM_IncomeBeforeTaxesFromOtherInsuranceOperations
Total income before income taxes (70,276)us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 58,123us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 402,321us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 906,337us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 1,342,388us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes (543,862)us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 386,071us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 56,178us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 1,296,505us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 1,240,775us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes 2,855,036us-gaap_ResultsOfOperationsIncomeBeforeIncomeTaxes
Insurance company operation assets 123,048,404UNAM_InsuranceCompanyOperationAssets       118,996,312UNAM_InsuranceCompanyOperationAssets       123,048,404UNAM_InsuranceCompanyOperationAssets 118,996,312UNAM_InsuranceCompanyOperationAssets 124,503,134UNAM_InsuranceCompanyOperationAssets
Intersegment asset eliminations (1,657,750)UNAM_IntersegmentAssetEliminations       (482,624)UNAM_IntersegmentAssetEliminations       (1,657,750)UNAM_IntersegmentAssetEliminations (482,624)UNAM_IntersegmentAssetEliminations (828,309)UNAM_IntersegmentAssetEliminations
Total insurance company operation 121,390,654UNAM_InsuranceCompanyOperationAssetsNetOfIntersegmentEliminations       118,513,688UNAM_InsuranceCompanyOperationAssetsNetOfIntersegmentEliminations       121,390,654UNAM_InsuranceCompanyOperationAssetsNetOfIntersegmentEliminations 118,513,688UNAM_InsuranceCompanyOperationAssetsNetOfIntersegmentEliminations 123,674,825UNAM_InsuranceCompanyOperationAssetsNetOfIntersegmentEliminations
Other insurance operations assets 14,624,915UNAM_OtherInsuranceOperationAssets       14,339,500UNAM_OtherInsuranceOperationAssets       14,624,915UNAM_OtherInsuranceOperationAssets 14,339,500UNAM_OtherInsuranceOperationAssets 16,333,201UNAM_OtherInsuranceOperationAssets
Total assets $ 136,015,569us-gaap_Assets       $ 132,853,188us-gaap_Assets       $ 136,015,569us-gaap_Assets $ 132,853,188us-gaap_Assets $ 140,008,026us-gaap_Assets