Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2016	Nov. 01, 2016
Document And Entity Information Abstract
Entity Registrant Name	Jacksonville Bancorp, Inc.
Entity Central Index Key	0001484949
Trading Symbol	jxsb
Current Fiscal Year End Date	--12-31
Entity Filer Category	Smaller Reporting Company
Entity Common Stock Shares Outstanding		1,798,544
Document Type	10-Q
Document Period End Date	Sep. 30, 2016
Amendment Flag	false
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3