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	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income (loss) attributable to FedNat Holding Company shareholders	$ (19,381)	$ 2,133
Weighted average number of common shares outstanding - basic (in shares)	14,395	14,249
Net income (loss) per share - basic (in dollars per share)	$ (1.35)	$ 0.15
Dilutive effect of stock compensation plans (in shares)	0	63
Weighted average number of common shares outstanding - diluted (in shares)	14,395	14,312
Net income (loss) per common share - diluted (in dollars per share)	$ (1.35)	$ 0.15
Dividends per share (in dollars per share)	$ 0	$ 0.09