Current report filing

Document and Entity Information

Document and Entity Information
Mar. 12, 2021
Cover [Abstract]  
Entity Address, State or Province TX
Amendment Flag false
Entity Central Index Key 0001499453
Document Type 8-K
Document Period End Date Mar. 12, 2021
Entity Registrant Name Spirit of Texas Bancshares, Inc.
Entity Incorporation State Country Code TX
Entity File Number 001-38484
Entity Tax Identification Number 90-0499552
Entity Address, Address Line One 1836 Spirit of Texas Way
Entity Address, City or Town Conroe
Entity Address, Postal Zip Code 77301
City Area Code (936)
Local Phone Number 521-1836
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common Stock, no par value
Trading Symbol STXB
Security Exchange Name NASDAQ
Entity Emerging Growth Company true
Entity Ex Transition Period false