Schedule V - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Allowance for Premiums Receivable [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	$ 2,615	$ 2,112	$ 1,977
Additions amounts charged to expense	835	663	488
Deductions amounts written off or disposals	(745)	(160)	(353)
Balance at end of period	2,705	2,615	2,112
Valuation Allowance for Deferred Tax Assets [Member]
SEC Schedule, 12-09, Valuation and Qualifying Accounts Disclosure [Line Items]
Balance at beginning of period	780	690	623
Additions amounts charged to expense	812	90	67
Deductions amounts written off or disposals	0	0	0
Balance at end of period	$ 1,592	$ 780	$ 690