CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020
Cash flow from operating activities:
Net income (loss)	$ (94,531)	$ (40,091)
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Net realized and unrealized (gains) losses	(10,949)	(8,882)
Amortization of investment premium or discount, net	2,986	2,353
Depreciation and amortization	1,447	1,427
Share-based compensation	956	1,194
Changes in operating assets and liabilities:
Prepaid reinsurance premiums	(42,657)	(140,469)
Premiums receivable, net	785	(11,331)
Reinsurance recoverable, net	(546,236)	(242,611)
Deferred acquisition costs, net	6,428	4,979
Current and deferred income taxes, net	5,283	(23,322)
Deferred revenue	(976)	(61)
Loss and loss adjustment expense reserves	497,170	229,618
Unearned premiums	(8,354)	19,504
Reinsurance payable and funds withheld liabilities	103,852	128,520
Other	(5,906)	400
Net cash provided by (used in) operating activities	(90,702)	(78,772)
Cash flow from investing activities:
Proceeds from sales of equity securities	0	11,441
Proceeds from sales of debt securities	205,932	346,890
Purchases of equity securities	(2,745)	(4,727)
Purchases of debt securities	(145,117)	(402,894)
Maturities and redemptions of debt securities	62,907	60,767
Purchases of property and equipment	(1,236)	(2,585)
Net cash provided by (used in) investing activities	119,741	8,892
Cash flow from financing activities:
Proceeds from issuance of long-term debt, net of issuance costs	19,872	0
Purchases of FedNat Holding Company common stock	0	(10,418)
Issuance of common stock	15,571	0
Issuance of common stock for share-based awards	11	42
Dividends paid	0	(3,819)
Net cash provided by (used in) financing activities	35,454	(14,195)
Net increase (decrease) in cash and cash equivalents	64,493	(84,075)
Cash and cash equivalents at beginning-of-period	102,367	133,361
Cash and cash equivalents at end-of-period	166,860	49,286
Supplemental disclosure of cash flow information:
Cash paid (received) during the period for interest	7,625	7,500
Cash paid (received) during the period for income taxes	(3,603)	(598)
Significant non-cash investing and financing transactions:
Right-of-use asset	(6,885)	(7,605)
Lease liability	$ 6,885	$ 7,605