v3.25.2
Document and Entity Information
Jun. 24, 2025
Document And Entity Information [Line Items]  
Amendment Flag false
Entity Central Index Key 0001464423
Document Type 8-K
Document Period End Date Jun. 24, 2025
Entity Registrant Name PennyMac Mortgage Investment Trust
Entity Incorporation State Country Code MD
Entity File Number 001-34416
Entity Tax Identification Number 27-0186273
Entity Address, Address Line One 3043 Townsgate Road
Entity Address, City or Town Westlake Village
Entity Address, State or Province CA
Entity Address, Postal Zip Code 91361
City Area Code (818)
Local Phone Number 224-7442
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Common Shares of Beneficial Interest, $0.01 par value
Trading Symbol PMT
Security Exchange Name NYSE
Series A Preferred Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 8.125% Series A Cumulative Redeemable Preferred Shares of Beneficial Interest, $0.01 par value
Trading Symbol PMT/PA
Security Exchange Name NYSE
Series B Preferred Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 8.00% Series B Cumulative Redeemable Preferred Shares of Beneficial Interest, $0.01 par value
Trading Symbol PMT/PB
Security Exchange Name NYSE
Series C Preferred Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 6.75% Series C Cumulative Redeemable Preferred Shares of Beneficial Interest, $0.01 par value
Trading Symbol PMT/PC
Security Exchange Name NYSE
M 8.50 Senior Note Due 2028 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 8.50% Senior Note Due 2028
Trading Symbol PMTU
Security Exchange Name NYSE
M 9.00 Senior Note Due 20302 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 9.00% Senior Note Due 2030
Trading Symbol PMTV
Security Exchange Name NYSE
M 9.00 Senior Note Due 20301 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 9.00% Senior Note Due 2030
Trading Symbol PMTW
Security Exchange Name NYSE