Related Party Transactions (Details) $ in Thousands	12 Months Ended
Dec. 31, 2021 USD ($)
Settlement of Short Swing Profit Claim [Abstract]
Short swing profit settlement	$ 20

Amount of short swing profit settlement from any purchase or sale (or sale and purchase) of the company's equity securities.

No definition available.

Name:	usph_ShortSwingProfitSettlement
Namespace Prefix:	usph_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration