CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Investments [Abstract]
Debt securities, available-for-sale, at fair value (amortized cost of $324,861 and $473,126, respectively)	$ 327,532	$ 488,210
Equity securities, at fair value	5,905	3,157
Total investments	333,437	491,367
Cash and cash equivalents	83,526	102,367
Prepaid reinsurance premiums	242,537	278,272
Premiums receivable, net of allowance of $125 and $233, respectively	41,174	50,803
Reinsurance recoverable, net of allowance of $249 and $65, respectively	613,203	413,026
Deferred acquisition costs, net	18,829	25,405
Current and deferred income taxes, net	30,014	35,035
Other assets	49,950	32,262
Total assets	1,412,670	1,428,537
Liabilities [Abstract]
Loss and loss adjustment expense reserves	738,794	540,367
Unearned premiums	342,747	366,789
Reinsurance payable and funds withheld liabilities	102,748	202,827
Long-term debt, net of deferred financing costs of $2,195 and $1,317, respectively	118,805	98,683
Deferred revenue	5,240	7,187
Other liabilities	44,950	54,524
Total liabilities	1,353,284	1,270,377
Commitments and Contingencies
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest [Abstract]
Preferred stock, $0.01 par value: 1,000,000 shares authorized	0	0
Common stock, $0.01 par value: 50,000,000 shares authorized; 17,446,930 and 13,717,908 shares issued and outstanding, respectively	174	137
Additional paid-in capital	186,007	169,298
Accumulated other comprehensive income (loss)	(1,034)	11,386
Retained earnings (deficit)	(125,761)	(22,661)
Total shareholders’ equity attributable to FedNat Holding Company shareholders	59,386	158,160
Total liabilities and shareholders' equity	$ 1,412,670	$ 1,428,537