Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	Apr. 29, 2020
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Entity Registrant Name	CENTERSTATE BANK CORPORATION
Trading Symbol	CSFL
Entity Central Index Key	0001102266
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Common Stock, Shares Outstanding		124,132,401
Entity Shell Company	false
Entity File Number	000-32017
Entity Tax Identification Number	59-3606741
Entity Incorporation, State or Country Code	FL
Title of 12(b) Security	Common stock
Security Exchange Name	NASDAQ
Entity Address, Address Line One	1101 First Street South
Entity Address, Address Line Two	Suite 202
Entity Address, City or Town	Winter Haven
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33880
City Area Code	863
Local Phone Number	293-4710
Document Quarterly Report	true
Document Transition Report	false