EARNINGS PER SHARE (Schedule of Calculation of Basic and Diluted Net Income Per Common Share) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		1 Months Ended	3 Months Ended		6 Months Ended
	Jun. 01, 2018	Feb. 28, 2018	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Earnings Per Share [Abstract]
Net income (loss) attributable to FedNat Holding Company shareholders			$ 8,820	$ 3,995	$ 16,283	$ 6,417
Weighted average number of common shares outstanding - basic			12,726	13,171	12,788	13,305
Net (loss) income per share - basic (in dollars per share)			$ 0.69	$ 0.30	$ 1.27	$ 0.48
Dilutive effect of stock compensation plans			120	85	101	100
Weighted average number of common shares outstanding - diluted			12,846	13,256	12,889	13,405
Net (loss) income per share - diluted (in dollars per share)			$ 0.69	$ 0.30	$ 1.26	$ 0.48
Dividends declared per share (in dollars per share)	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0.16	$ 0.16