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		9 Months Ended
	Jul. 31, 2019	May 30, 2019	Jan. 31, 2019	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net income (loss) attributable to FedNat Holding Company shareholders				$ 4,659	$ 7,950	$ 7,904	$ 24,233
Weighted average number of common shares outstanding - basic				12,854	12,749	12,831	12,775
Net (loss) income per share - basic (in dollars per share)				$ 0.36	$ 0.62	$ 0.62	$ 1.90
Dilutive effect of stock compensation plans				43	121	49	91
Weighted average number of common shares outstanding - diluted				12,897	12,870	12,880	12,866
Net (loss) income per share - diluted (in dollars per share)				$ 0.36	$ 0.62	$ 0.61	$ 1.88
Dividends declared per share (in dollars per share)	$ 0.08	$ 0.08	$ 0.08	$ 0.08	$ 0	$ 0.24	$ 0.16