Significant Accounting Policies - PDR (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Premium Deficiency Reserve ("PDR")
Premium Deficiency Reserve	$ 37,835,642	$ 0

The carrying amount of premium deficiency reserve payable in twelve months or in the next operating cycle if longer.

No definition available.

Name:	piii_PremiumDeficiencyReserveCurrent
Namespace Prefix:	piii_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant