Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2017	Mar. 08, 2018	Jun. 30, 2017
Document and Entity Information [Abstract]
Document Type	10-K
Document Period End Date	Dec. 31, 2017
Amendment Flag	false
Entity Registrant Name	FEDERATED NATIONAL HOLDING CO
Entity Central Index Key	0001069996
Entity Current Reporting Status	Yes
Entity Voluntary Filers	No
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Well-known Seasoned Issuer	No
Entity Public Float			$ 192,340,736
Document Fiscal Year Focus	2017
Document Fiscal Period Focus	FY
Entity Common Stock, Shares Outstanding		12,708,152