CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Investments [Abstract]
Debt securities, available-for-sale, at fair value (amortized cost of $473,126 and $512,645, respectively)	$ 488,210	$ 526,265
Debt securities, held-to-maturity, at amortized cost	0	4,337
Equity securities, at fair value	3,157	20,039
Total investments	491,367	550,641
Cash and cash equivalents	102,367	133,361
Prepaid reinsurance premiums	278,272	145,659
Premiums receivable, net of allowance of $233 and $159, respectively	50,803	41,422
Reinsurance recoverable, net of allowance of $65 and $0, respectively	413,026	209,615
Deferred acquisition costs and value of business acquired, net	25,405	56,136
Current and deferred income taxes, net	35,035	2,552
Goodwill	0	10,997
Other assets	32,262	28,633
Total assets	1,428,537	1,179,016
Liabilities [Abstract]
Loss and loss adjustment expense reserves	540,367	324,362
Unearned premiums	366,789	360,870
Reinsurance payable and funds withheld liabilities	202,827	102,467
Long-term debt, net of deferred financing costs of $1,317 and $1,478, respectively	98,683	98,522
Deferred revenue	7,187	6,856
Other liabilities	54,524	37,246
Total liabilities	1,270,377	930,323
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: 25,000,000 shares authorized; 13,717,908 and 14,414,821 shares issued and outstanding, respectively	137	144
Additional paid-in capital	169,298	167,677
Accumulated other comprehensive income (loss)	11,386	10,281
Retained earnings (deficit)	(22,661)	70,591
Total shareholders’ equity attributable to FedNat Holding Company shareholders	158,160	248,693
Total liabilities and shareholders' equity	$ 1,428,537	$ 1,179,016