v3.25.4
Document and Entity Information
Mar. 04, 2026
Cover [Abstract]  
Amendment Flag false
Entity Central Index Key 0002089126
Document Type 8-K
Document Period End Date Mar. 04, 2026
Entity Registrant Name PennantPark Private Income Fund
Entity Incorporation State Country Code DE
Entity File Number 000-56787
Entity Tax Identification Number 33-4777837
Entity Address, Address Line One 1691 Michigan Avenue
Entity Address, City or Town Miami Beach
Entity Address, State or Province FL
Entity Address, Postal Zip Code 33139
City Area Code (786)
Local Phone Number 297-9500
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company true
Entity Ex Transition Period true