Director option awards

No definition available.

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Data Type:	xbrli:sharesItemType
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- Definition

Amount of noncash expense (reversal of expense) for other postretirement benefits. Excludes pension benefits.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=123570139&loc=d3e3602-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of shares authorized for issuance under share-based payment arrangement.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=120381028&loc=d3e5070-113901

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	instant

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	us-gaap_AwardTypeAxis=unt_DirectorsPlanMember
Namespace Prefix:
Data Type:	na
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- Details

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STOCK-BASED COMPENSATION (Narrative) (Details) - USD ($) $ in Thousands	8 Months Ended
	Aug. 31, 2020	Sep. 03, 2020
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum number of shares of common stock allowed for the issuance		903,226
Directors Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Director option awards	3,500
Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Reversal of previously recorded expense for unvested awards	$ (2,200)