Stockholders' Equity - Schedule of Statutory Insurance - Statutory capital, surplus, net income and dividends (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Statutory Accounting Practices, Statutory Amount Available for Dividend Payments [Abstract]
Statutory Accounting Practices, Dividends Paid not needing the Approval of Regulatory Agency	$ 0	$ 0	$ 0	$ 9,001
Statutory Accounting Practices, Dividends Paid with Approval of Regulatory Agency	0	0	0	1,188
Statutory Accounting Practices, Dividends Paid, Total	0	$ 0	0	$ 10,189
Amount available for ordinary dividends of the Company's insurance company subsidiaries	$ 13,418		$ 13,418		$ 4,527