v3.26.3
Document and Entity Information
 6 Months Ended
Sep. 30, 2026
Cover [Abstract]  
Document Type 10-Q
Amendment Flag false
Document Period End Date Sep. 30, 2026
Document Fiscal Year Focus 2027
Document Fiscal Period Focus Q2
Title of 12(b) Security Common Stock
Security Exchange Name NASDAQ
Trading Symbol CPBI
Entity Registrant Name Central Plains Bancshares, Inc.
Entity Central Index Key 0001979332
Entity Current Reporting Status Yes
Entity Interactive Data Current Yes
Current Fiscal Year End Date --03-31
Entity Filer Category Non-accelerated Filer
Entity Shell Company false
Entity Small Business true
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity File Number 001-41844
Entity Incorporation, State or Country Code MD
Entity Tax Identification Number 93-2239246
Entity Address, Address Line One 221 South Locust Street
Entity Address, City or Town Grand Island
Entity Address, State or Province NE
Entity Address, Postal Zip Code 68801
City Area Code 308
Local Phone Number 382-4000
Document Quarterly Report true
Document Transition Report false