Organization and Basis of Presentation (Details)
|
1 Months Ended |
3 Months Ended |
6 Months Ended |
|
Nov. 30, 2013
shares
|
Apr. 30, 2012
USD ($)
shares
|
Jun. 30, 2017
USD ($)
state
|
Jun. 30, 2016
USD ($)
|
Jun. 30, 2017
USD ($)
state
|
Jun. 30, 2016
USD ($)
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
| Proceeds from issuance of common stock, net of stock issuance costs |
|
$ 510,000,000
|
|
|
|
|
| Number of states in which the entity operates | state |
|
|
50
|
|
50
|
|
| Deferred policy acquisition cost, amortization expense |
|
|
$ 1,300,000
|
$ 1,300,000
|
$ 2,300,000
|
$ 2,200,000
|
| Premium deficiency reserve |
|
|
$ 0
|
$ 0
|
$ 0
|
$ 0
|
| Common Stock - Class A |
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
| Stock issued during period, shares, net issues (in shares) | shares |
|
55,000,000
|
|
|
|
|
| MAC Financial Holding Corporation and Subsidiaries |
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
| Consideration transferred, cash and equity interests issued and issuable |
|
$ 8,500,000
|
|
|
|
|
| Consideration transferred, liabilities incurred |
|
$ 1,300,000
|
|
|
|
|
| IPO |
|
|
|
|
|
|
| Business Acquisition [Line Items] |
|
|
|
|
|
|
| Stock issued during period, shares, net issues (in shares) | shares |
2,400,000
|
|
|
|
|
|