Organization and Basis of Presentation - Additional information (Details) $ / shares in Units, $ in Millions		12 Months Ended
	Dec. 11, 2018 USD ($) $ / shares shares	Dec. 31, 2018 Subsidiary State
Organization And Basis Of Presentation [Line Items]
Number of wholly-owned non-insurance subsidiaries | Subsidiary		2
Number of states | State		45
Predecessor
Organization And Basis Of Presentation [Line Items]
Gross Proceeds from issuance of common stock initial public offering | $	$ 35.3
IPO | Predecessor
Organization And Basis Of Presentation [Line Items]
Shares issued | shares	3,530,150
Shares issued, price per share | $ / shares	$ 10.00