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
	Jan. 31, 2019	Mar. 31, 2019	Mar. 31, 2018
Earnings Per Share [Abstract]
Net income (loss) attributable to FedNat Holding Company shareholders		$ (3,865)	$ 7,463
Weighted average number of common shares outstanding - basic		12,795	12,850
Net (loss) income per share - basic (in dollars per share)		$ (0.30)	$ 0.58
Dilutive effect of stock compensation plans		0	95
Weighted average number of common shares outstanding - diluted		12,795	12,945
Net (loss) income per share - diluted (in dollars per share)		$ (0.30)	$ 0.58
Dividends declared per share (in dollars per share)	$ 0.08	$ 0.08	$ 0.08