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COMMITMENTS AND CONTINGENCIES (Details) (USD $)
3 Months Ended
Mar. 31, 2015
Liability for contingent costs [Line Items]  
Litigation Settlement, Amount $ 0us-gaap_LitigationSettlementAmount
RLF III, LLC [Member]  
Investment Commitment [Line Items]  
Total Funding Commitment 4,000,000utgn_MaximumInvestmentCommitment
/ utgn_InvestmentCommitmentAxis
= utgn_RlfIiiLlcMember
Unfunded Commitment 398,120utgn_RemainingMinimumAmountCommitted
/ utgn_InvestmentCommitmentAxis
= utgn_RlfIiiLlcMember
Llano Music, LLC [Member]  
Investment Commitment [Line Items]  
Total Funding Commitment 4,000,000utgn_MaximumInvestmentCommitment
/ utgn_InvestmentCommitmentAxis
= utgn_LlanoMusicLlcMember
Unfunded Commitment 1,904,000utgn_RemainingMinimumAmountCommitted
/ utgn_InvestmentCommitmentAxis
= utgn_LlanoMusicLlcMember
Marcellus HBPI, LLP [Member]  
Investment Commitment [Line Items]  
Total Funding Commitment 1,800,000utgn_MaximumInvestmentCommitment
/ utgn_InvestmentCommitmentAxis
= utgn_MarcellusHbpiLlpMember
Unfunded Commitment 141,300utgn_RemainingMinimumAmountCommitted
/ utgn_InvestmentCommitmentAxis
= utgn_MarcellusHbpiLlpMember
Sovereign's Capital, LP Fund I [Member]  
Investment Commitment [Line Items]  
Total Funding Commitment 500,000utgn_MaximumInvestmentCommitment
/ utgn_InvestmentCommitmentAxis
= utgn_SovereignSCapitalLpMember
Unfunded Commitment 185,000utgn_RemainingMinimumAmountCommitted
/ utgn_InvestmentCommitmentAxis
= utgn_SovereignSCapitalLpMember
Sovereign's Capital LP Fund II [Member]  
Investment Commitment [Line Items]  
Total Funding Commitment 1,000,000utgn_MaximumInvestmentCommitment
/ utgn_InvestmentCommitmentAxis
= utgn_utgn_SovereignSCapitalLpMember
Unfunded Commitment 1,000,000utgn_RemainingMinimumAmountCommitted
/ utgn_InvestmentCommitmentAxis
= utgn_utgn_SovereignSCapitalLpMember
MM-Appalachia IV, LP [Member]  
Investment Commitment [Line Items]  
Total Funding Commitment 2,475,000utgn_MaximumInvestmentCommitment
/ utgn_InvestmentCommitmentAxis
= utgn_MmAppalachiaIvLpMember
Unfunded Commitment 825,000utgn_RemainingMinimumAmountCommitted
/ utgn_InvestmentCommitmentAxis
= utgn_MmAppalachiaIvLpMember
UGLIC, LLC [Member]  
Investment Commitment [Line Items]  
Total Funding Commitment 1,600,000utgn_MaximumInvestmentCommitment
/ utgn_InvestmentCommitmentAxis
= utgn_UGLICLLCMember
Unfunded Commitment 800,000utgn_RemainingMinimumAmountCommitted
/ utgn_InvestmentCommitmentAxis
= utgn_UGLICLLCMember
ACAP [Member]  
Liability for contingent costs [Line Items]  
Loss Contingency Accrual, Ending Balance 0us-gaap_LossContingencyAccrualAtCarryingValue
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= utgn_AcapMember
Loss Contingency $ 0us-gaap_LossContingencyAccrualAtCarryingValue
/ us-gaap_LossContingenciesByNatureOfContingencyAxis
= utgn_AcapMember
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