Fair Value Measurements (Narrative) (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Fair Value Disclosures [Abstract]
Transfers between Level 2 and Level 3 assets (liabilities)	$ 0

Transfers between Level 2 and Level 3 assets (liabilities)

No definition available.

Name:	unt_TransfersbetweenLevel2andLevel3assetsliabilities
Namespace Prefix:	unt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant