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SUMMARY OF INVESTMENTS (Narratives) (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Trading securities $ 20,928,000us-gaap_TradingSecurities $ 12,427,000us-gaap_TradingSecurities  
Remaining potential off-balance sheet contractual obligation 11,830,000ufcs_RemainingPotentialOffBalanceSheetContractualObligation    
Other-than-temporary impairment charges 0us-gaap_ImpairmentOfInvestments 139,000us-gaap_ImpairmentOfInvestments 4,000us-gaap_ImpairmentOfInvestments
Fixed Maturities [Member]      
Other-than-temporary impairment charges 0us-gaap_ImpairmentOfInvestments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_FixedMaturitiesMember
139,000us-gaap_ImpairmentOfInvestments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_FixedMaturitiesMember
0us-gaap_ImpairmentOfInvestments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_FixedMaturitiesMember
Equity Securities [Member]      
Other-than-temporary impairment charges 0us-gaap_ImpairmentOfInvestments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
0us-gaap_ImpairmentOfInvestments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
4,000us-gaap_ImpairmentOfInvestments
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
Equity Securities [Member] | Maximum [Member]      
Largest unrealized loss greater than 12 months on an individual security $ 54,000ufcs_IndividualSecurityContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_EquitySecuritiesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember