REINSURANCE (Narrative) (Details) - USD ($) $ in Thousands			1 Months Ended	3 Months Ended
	Jul. 01, 2018	Jul. 01, 2017	Jul. 31, 2016	Mar. 31, 2019	Dec. 31, 2018	Jul. 01, 2016
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				$ 31,399	$ 63,599
Reinsurance recoverable, net				301,922	$ 211,424
Maximum | Hurricane Irma
Liability for Catastrophe Claims [Line Items]
Reinsurance recoverable, net				272,900
FNIC's 2017-2018 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				174,400
MNIC's 2017-2018 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				5,000
Federated National 2018-2019 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				148,800
Federated National 2018-2019 Reinsurance Programs | First Event Coverage
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				3,000
Federated National 2018-2019 Reinsurance Programs | Maximum
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				20,000
Multiple Year Protection Terminated | Maximum
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				89,000
Multiple Year Protection Plan Expired | Maximum
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				156,000
Federated Nationals Insurance Company Non Florida Reinsurance Program 2018-2019
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				2,000
Federated Nationals Insurance Company Non Florida Reinsurance Program 2018-2019 | First Event Coverage
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				5,000
Reinsurance retention amount				15,000
Reinsurance amount retained on net basis with profit share agreement				7,500
Federated Nationals Insurance Company Non Florida Reinsurance Program 2018-2019 | Second Event Coverage
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				13,000
Reinsurance retention amount				2,000
Reinsurance amount retained on net basis with profit share agreement				1,000
Federated Nationals Insurance Company Non Florida Reinsurance Program 2018-2019 | Maximum
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				23,000
Federated Nationals Insurance Company Non Florida Reinsurance Program 2018-2019 | Maximum | Second Event Coverage
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				18,000
Federated Nationals Insurance Company Non Florida Reinsurance Program 2017-2018
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				1,700
Federated Nationals Insurance Company Non Florida Reinsurance Program 2017-2018 | First Event Coverage
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				5,000
Reinsurance retention amount				13,000
Reinsurance amount retained on net basis with profit share agreement				6,500
Federated Nationals Insurance Company Non Florida Reinsurance Program 2017-2018 | Second Event Coverage
Liability for Catastrophe Claims [Line Items]
Reinsurance retention amount				2,000
Reinsurance amount retained on net basis with profit share agreement				1,000
Federated Nationals Insurance Company Non Florida Reinsurance Program 2017-2018 | Maximum
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				21,000
Federated Nationals Insurance Company Non Florida Reinsurance Program 2017-2018 | Maximum | Second Event Coverage
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				$ 16,000
Quota Share Treaties | Private Passenger Automobile Insurance Product Line
Liability for Catastrophe Claims [Line Items]
Percentage of property quota share reinsurance treaty				75.00%
Federated National's Florida Exposure | FNIC's 2017-2018 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				$ 124,000
Amount of private market excess of loss treaties				25,100
Florida And Non-Florida Exposures | Private Market Excess of Loss Treaties | New Multiple Year Protection This Year
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				89,000
Florida And Non-Florida Exposures | Private Market Excess of Loss Treaties | Renewing Multiple Year Protection From Last Year
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				156,000
FHCF | FNIC's 2017-2018 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				$ 50,400
Percentage of property quota share reinsurance treaty				75.00%
FHCF | MNIC's 2017-2018 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				$ 1,800
FNIC
Liability for Catastrophe Claims [Line Items]
Trust agreement for loss exposure (Less than for September 30, 2018)				100
FNIC | FNIC's 2017-2018 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Excess retention, amount reinsured				$ 18,000
FNIC | Quota Share One | Property Insurance Product Line
Liability for Catastrophe Claims [Line Items]
Percentage of property quota share expired on cut off basis		10.00%
FNIC | Quota Share One | Florida Homeowners Book of Business
Liability for Catastrophe Claims [Line Items]
Percentage of property quota share reinsurance treaty	2.00%			30.00%
FNIC | Quota Share Two | Florida Homeowners Book of Business
Liability for Catastrophe Claims [Line Items]
Percentage of property quota share reinsurance treaty				10.00%
FNIC | Private Market Excess of Loss Treaties | Minimum
Liability for Catastrophe Claims [Line Items]
Payment made to purchase an underlying limit of protection				$ 7,100
Reinsurance prepaid automatic reinstatement protection amount acquired				18,000
Private and FHCF Reinsurance | FNIC's 2017-2018 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Liability for catastrophe claims				2,200,000
Maximum single event coverage				1,500,000
Private and FHCF Reinsurance | MNIC's 2017-2018 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Liability for catastrophe claims				109,000
Maximum single event coverage				$ 68,100
Percentage of property quota share reinsurance treaty				75.00%
Monarch National S Florida | MNIC’s 2016-2017 Catastrophe Reinsurance Program
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				$ 3,200
Monarch National S Florida | Private Market Excess of Loss Treaties
Liability for Catastrophe Claims [Line Items]
Additional coverage amount				3,400
Florida | Quota Share Treaties | Property Insurance Product Line
Liability for Catastrophe Claims [Line Items]
Percentage of property quota share reinsurance treaty		10.00%	30.00%
Florida | Quota Share One | Property Insurance Product Line
Liability for Catastrophe Claims [Line Items]
Percentage of property quota share expired on cut off basis						30.00%
Percentage of unearned premiums and losses retained						30.00%
Florida | Federated National's Florida Exposure | Federated National 2018-2019 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				102,700
Florida | FHCF | Federated National 2018-2019 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Reinsurance payable				$ 46,100
Percentage of property quota share reinsurance treaty				75.00%
Florida | FNIC | Quota Share Treaties | Property Insurance Product Line
Liability for Catastrophe Claims [Line Items]
Percentage of property quota share reinsurance treaty				40.00%
Number of property quota share treaties				2 years
Florida | Private and FHCF Reinsurance | Federated National 2018-2019 Reinsurance Programs
Liability for Catastrophe Claims [Line Items]
Liability for catastrophe claims				$ 1,800,000
Maximum single event coverage				$ 1,300,000