Concentration - By State (Details)	Jun. 30, 2020	Dec. 31, 2019
California
Concentration Risk [Line Items]
Percentage of insurance policies held in specific states	17.88%	17.46%
Florida
Concentration Risk [Line Items]
Percentage of insurance policies held in specific states	14.88%	14.86%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

No definition available.

Name:	us-gaap_ConcentrationRiskLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration