REINSURANCE (Narrative) (Details) $ in Thousands																			1 Months Ended		3 Months Ended		12 Months Ended
	Dec. 31, 2021 USD ($)	Nov. 15, 2021	Jul. 01, 2021	Mar. 01, 2021 USD ($) layer	Feb. 01, 2021	Jan. 01, 2021 USD ($)	Dec. 31, 2020 USD ($)	Nov. 15, 2020	Nov. 04, 2020 USD ($)	Nov. 03, 2020	Nov. 02, 2020	Oct. 13, 2020 USD ($)	Oct. 01, 2020	Sep. 03, 2020 USD ($)	Jul. 01, 2020	Jul. 01, 2019	Oct. 01, 2018	Jul. 01, 2018	Apr. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)	Dec. 31, 2021 USD ($) security
Liability for Catastrophe Claims [Line Items]
Reinsurance payable and funds withheld liabilities	$ 102,748						$ 202,827														$ 102,748	$ 202,827	$ 102,748
Reinsurance premium paid	613,203						413,026														613,203	413,026	613,203
Hurricane
Liability for Catastrophe Claims [Line Items]
Reinsurance premium paid	504,800						304,300														504,800	304,300	504,800
FNIC | Maximum
Liability for Catastrophe Claims [Line Items]
Trust agreement for loss exposure (Less than)	100						$ 100														100	$ 100	100
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs
Liability for Catastrophe Claims [Line Items]
Reinsurance payable and funds withheld liabilities	306,100																				306,100		306,100
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | Maximum | First Event Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention amount																							18,000
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | Maximum | Second Event Coverage
Liability for Catastrophe Claims [Line Items]
Additional coverage amount	16,000																				16,000		16,000
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | Federated National's Florida Exposure
Liability for Catastrophe Claims [Line Items]
Reinsurance payable and funds withheld liabilities	258,300																				258,300		258,300
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | FHCF
Liability for Catastrophe Claims [Line Items]
Maximum single event coverage	650,000																				650,000		650,000
Reinsurance payable and funds withheld liabilities	$ 47,800																				$ 47,800		47,800
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | FNIC
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 25,000
Retention percentage																							100.00%
Amount reinsured, co-participation																							$ 6,000
Excess retention, retention percentage, co-participation																							9.10%
Excess retention, threshold limit above initial insured amount																							$ 70,000
Potential decrease in retention if placed on parametric basis with an excess and surplus lines carrier	28.50%																				28.50%		28.50%
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | FNIC | Second and Third Event Coverage
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 10,000
Excess retention, retention percentage, co-participation																							71.50%
Excess retention, threshold limit above initial insured amount																							$ 15,000
Second and third event retention, combined basis																							14,300
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | FNIC | Second and Third Event Coverage | Hurricane Delta and Subsequent Events
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured									$ 13,500			$ 8,000		$ 39,200
Reinsurance payable and funds withheld liabilities									$ 2,000			$ 875		$ 11,200
Excess retention, retention percentage, co-participation												50.00%
Excess retention, threshold limit above initial insured amount												$ 10,000
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | FNIC | Second and Third Event Coverage | Storm Events in 2020
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																				$ 25,000
Reinsurance payable and funds withheld liabilities	$ 2,800																				$ 2,800		2,800
Excess retention, retention percentage, co-participation																				50.00%
Excess retention, threshold limit above initial insured amount																				$ 70,000
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | Private and FHCF Reinsurance
Liability for Catastrophe Claims [Line Items]
Maximum single event coverage	650,000																				650,000		650,000
Excess retention, amount reinsured																							25,000
Aggregate maximum single event coverage	1,300,000																				1,300,000		1,300,000
Increase in carrying amount	345,000																				345,000		345,000
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | Private and FHCF Reinsurance | First Event Coverage
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 31,000
Combined FNIC, MIC and MNIC 2020 to 2021 catastrophe excess loss reinsurance programs | Private and FHCF Reinsurance | Maximum
Liability for Catastrophe Claims [Line Items]
Percentage of quota share reinsurance treaty																							90.00%
2021-2022 Catastrophe Excess of Loss Reinsurance Program
Liability for Catastrophe Claims [Line Items]
Prepaid automatic reinstatement protection	30,000																				30,000		$ 30,000
2021-2022 Catastrophe Excess of Loss Reinsurance Program | Florida Homeowners Book of Business | First Event Coverage | Florida
Liability for Catastrophe Claims [Line Items]
Aggregate maximum single event coverage	972,000																				972,000		972,000
2021-2022 Catastrophe Excess of Loss Reinsurance Program | Non-Florida Homeowners Book Of Business | First Event Coverage
Liability for Catastrophe Claims [Line Items]
Aggregate maximum single event coverage	910,000																				910,000		910,000
2021-2022 Catastrophe Excess of Loss Reinsurance Program | Non-Florida Homeowners Book Of Business | Second and Third Event Coverage
Liability for Catastrophe Claims [Line Items]
Aggregate maximum single event coverage	831,000																				831,000		831,000
2021-2022 Catastrophe Excess of Loss Reinsurance Program | Federated National's Florida Exposure
Liability for Catastrophe Claims [Line Items]
Reinsurance payable and funds withheld liabilities	237,900																				237,900		$ 237,900
2021-2022 Catastrophe Excess of Loss Reinsurance Program | FHCF | Maximum
Liability for Catastrophe Claims [Line Items]
Percentage of quota share reinsurance treaty																							90.00%
2021-2022 Catastrophe Excess of Loss Reinsurance Program | FHCF | Non-Florida Homeowners Book Of Business
Liability for Catastrophe Claims [Line Items]
Aggregate maximum single event coverage	504,000																				504,000		$ 504,000
2021-2022 Catastrophe Excess of Loss Reinsurance Program | Private and FHCF Reinsurance
Liability for Catastrophe Claims [Line Items]
Liability for catastrophe claims	2,250,000																				2,250,000		2,250,000
Reinsurance payable and funds withheld liabilities	274,200																				274,200		274,200
Aggregate maximum single event coverage	$ 1,400,000																				$ 1,400,000		1,400,000
2021-2022 Catastrophe Excess of Loss Reinsurance Program | Private and FHCF Reinsurance | First Event Coverage
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 18,250
First event retention reduction, percent	41.00%																				41.00%		41.00%
2021-2022 Catastrophe Excess of Loss Reinsurance Program | Private and FHCF Reinsurance | Florida Homeowners Book of Business | First Event Coverage | Florida
Liability for Catastrophe Claims [Line Items]
Aggregate maximum single event coverage	$ 468,000																				$ 468,000		$ 468,000
2021-2022 Catastrophe Excess of Loss Reinsurance Program | Private and FHCF Reinsurance | Non-Florida Homeowners Book Of Business
Liability for Catastrophe Claims [Line Items]
Aggregate maximum single event coverage	2,250,000																				2,250,000		2,250,000
Primary Tower | Non-Florida Homeowners Book Of Business | First Event Coverage
Liability for Catastrophe Claims [Line Items]
Aggregate maximum single event coverage	468,000																				468,000		468,000
Primary Tower | FHCF
Liability for Catastrophe Claims [Line Items]
Reinsurance payable and funds withheld liabilities	36,300																				36,300		36,300
Primary Tower | FNIC | First Event Coverage | Hurricane Delta and Subsequent Events
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							10,000
Excess retention, threshold limit above initial insured amount																							20,000
Primary Tower | Private and FHCF Reinsurance
Liability for Catastrophe Claims [Line Items]
Reinsurance payable and funds withheld liabilities	204,800																				204,800		204,800
Primary Tower | Private and FHCF Reinsurance | Florida Homeowners Book of Business
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 10,000
Number of reinsurance towers | security																							2
Aggregate maximum single event coverage	982,000																				982,000		$ 982,000
FNIC SageSure Tower | FNIC | First Event Coverage | Hurricane Delta and Subsequent Events
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							8,000
Excess retention, threshold limit above initial insured amount																							22,000
FNIC SageSure Tower | FNIC | Non-Florida Homeowners Book Of Business | Second Event Coverage
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 9,750
Excess retention, retention percentage, co-participation																							75.00%
Excess retention, threshold limit above initial insured amount																							$ 27,000
FNIC SageSure Tower | FNIC | Non-Florida Homeowners Book Of Business | Third Event Coverage
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 17,300
Excess retention, retention percentage, co-participation																							47.00%
Excess retention, threshold limit above initial insured amount																							$ 27,000
FNIC SageSure Tower | Private and FHCF Reinsurance
Liability for Catastrophe Claims [Line Items]
Reinsurance payable and funds withheld liabilities	$ 69,400																				$ 69,400		$ 69,400
Downward premium exposure adjustment from exposure management initiatives, percent	19.00%																				19.00%		19.00%
FNIC SageSure Tower | Private and FHCF Reinsurance | All Perils
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 30,000
FNIC SageSure Tower | Private and FHCF Reinsurance | First Event Coverage | Hurricane
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 12,000
Retention percentage																							60.00%
FNIC SageSure Tower | Private and FHCF Reinsurance | First Event Coverage | All Perils
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 6,000
Retention percentage																							40.00%
FNIC SageSure Tower | Private and FHCF Reinsurance | Non-Florida Homeowners Book Of Business
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured																							$ 8,250
Aggregate maximum single event coverage	$ 450,000																				$ 450,000		$ 450,000
Quota Share One | FNIC | Florida Homeowners Book of Business
Liability for Catastrophe Claims [Line Items]
Percentage of quota share reinsurance treaty	7.50%	10.00%	20.00%				10.00%	10.00%					10.00%					2.00%
Percentage of quota share reinsurance treaty terminated	10.00%																				10.00%		10.00%
Quota Share One | FNIC | Non-Florida Homeowners Book Of Business
Liability for Catastrophe Claims [Line Items]
Percentage of quota share reinsurance treaty										80.00%	50.00%
Percentage of quota share reinsurance treaty terminated						80.00%
Pre-tax loss from settlement of managerial general underwriting and profit sharing agreements																					$ 2,500
Quota Share One | FNIC | Non-Florida Homeowners Book Of Business | SageSure LLP
Liability for Catastrophe Claims [Line Items]
Percentage of quota share reinsurance treaty terminated	80.00%					80.00%															80.00%		80.00%
Proceeds from initial commutation agreement																			$ 7,200
New percentage quota share reinsurance treaty	100.00%				80.00%
Quota Share One | FNIC | Federated Nationals Insurance Company Non Florida Reinsurance Program 2018-2019 | SageSure LLP
Liability for Catastrophe Claims [Line Items]
Percentage of quota share reinsurance treaty															50.00%
Profit sharing percent															50.00%
Maison Insurance Company (MIC) | FNIC | Hurricane Delta and Subsequent Events
Liability for Catastrophe Claims [Line Items]
Reinsurance payable and funds withheld liabilities				$ 13,000		$ 2,300
Maison Insurance Company (MIC) | FNIC | First Event Coverage | Hurricane Delta and Subsequent Events
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured						$ 10,000
Excess retention, retention percentage, co-participation						65.00%
Excess retention, threshold limit above initial insured amount				50,000		$ 15,000
Excess retention, occurrence deductible						850
Maison Insurance Company (MIC) | FNIC | Second Event Coverage | Hurricane Delta and Subsequent Events
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured				$ 10,000		$ 4,150
Number of layers protection was secured | layer				2
Quota Share Two | FNIC | Florida Homeowners Book of Business
Liability for Catastrophe Claims [Line Items]
Percentage of quota share reinsurance treaty															10.00%	10.00%	10.00%					20.00%
2019-2020 Catastrophe Excess Loss Reinsurance Programs | Maximum | Second Event Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention amount																							$ 2,000
2019-2020 Catastrophe Excess Loss Reinsurance Programs | Private and FHCF Reinsurance
Liability for Catastrophe Claims [Line Items]
Maximum single event coverage	$ 1,300,000																				$ 1,300,000		1,300,000
Liability for catastrophe claims	$ 1,900,000																				$ 1,900,000		$ 1,900,000