Significant Accounting Policies - PDR (Details) - USD ($) $ in Thousands	Mar. 31, 2025	Dec. 31, 2024
Premium Deficiency Reserve ("PDR")
Premium deficiency reserve	$ 60,406	$ 67,368

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