For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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ORGANIZATION, CONSOLIDATION AND BASIS OF PRESENTATION - (Narrative) (Details)		12 Months Ended
	Feb. 21, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Premiums Written, Net [Member] \| Homeowners' Insurance Product Line [Member] \| Customer Concentration Risk [Member] \| ISA [Member]
Organization, Consolidation, And Basis of Preparation [Line Items]
Concentration risk, percentage		23.20%	23.80%	23.80%
Premiums Written, Net [Member] \| Homeowners' Insurance Product Line [Member] \| Customer Concentration Risk [Member] \| SageSure Insurance Managers LLC [Member]
Organization, Consolidation, And Basis of Preparation [Line Items]
Concentration risk, percentage		23.10%	15.00%	10.20%
Monarch National Insurance Company [Member]
Organization, Consolidation, And Basis of Preparation [Line Items]
VIE ownership percentage	100.00%