Name:	us-gaap_LiabilityForFuturePolicyBenefitsAssumptionsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Rate of interest used to calculate the liability for future policy benefits.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480081/944-40-50-6

Name:	us-gaap_LiabilityForFuturePolicyBenefitsInterestRate
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

The parent entity's interest in net assets of the subsidiary, expressed as a percentage.

No definition available.

Name:	us-gaap_MinorityInterestOwnershipPercentageByParent
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- References

No definition available.

Name:	us-gaap_PremiumsWrittenGrossAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

The estimated or actual value of the real estate property at the end of its useful life or when it is no longer serviceable (cannot be used for its original purpose).

No definition available.

Name:	utgn_EstimatedUsefulLifeOfRealEstate
Namespace Prefix:	utgn_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

Interest crediting rates used to calculate benefit reserves for various insurance products.

No definition available.

Name:	utgn_InterestCreditingRatesUsedForCalculatingBenefitReserves
Namespace Prefix:	utgn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- References

No definition available.

Name:	utgn_InvestmentRealEstateAbstract
Namespace Prefix:	utgn_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Ownership or control interest in outstanding common stock, expressed as a percentage.

No definition available.

Name:	utgn_OwnershipInterestPercentage
Namespace Prefix:	utgn_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

Maximum that will be retained by the entity, which includes accidental death benefits on any one life.

No definition available.

Name:	utgn_RetentionAmountLimitPerOnePerson
Namespace Prefix:	utgn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Name:	us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=us-gaap_MajorityShareholderMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_RangeAxis=srt_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=us-gaap_LifeInsuranceSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=utgn_AnnuityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=us-gaap_UniversalLifeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_ProductOrServiceAxis=us-gaap_InterestSensitiveLifeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	srt_OwnershipAxis=utgn_FirstSouthernBancorpIncMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: