Schedule V - Valuation and Qualifying Accounts - (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for uncollectible reinsurance recoverable
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	$ 0	$ 0	$ 0
Valuation Allowances and Reserves, Additions for Charges to Cost and Expense	0	0	0
Deductions	0	0	0
Balance, end of period	0	0	0
Allowance for uncollectible premiums receivable
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance, beginning of period	77	70	55
Valuation Allowances and Reserves, Additions for Charges to Cost and Expense	82	7	15
Deductions	0	0	0
Balance, end of period	$ 159	$ 77	$ 70