Schedule II - Condensed Financial Information of Registrant (Parent Company Only) (Statements of Operations) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017
Investment income, net of expenses	$ 18,232	$ 18,874
Management fee income	5,115	3,867
Total revenues	379,268	385,521
Interest expense	4,545	4,512
Amortization of intangible assets	2,468	2,468
Total expenses	366,465	402,093
Income before equity in undistributed earnings (loss) of subsidiaries and income tax benefit	12,803	(16,572)
Income tax benefit	2,456	(5,019)
Net income (loss)	10,347	(11,553)
Parent Company [Member]
Investment income, net of expenses	290	210
Dividend income from subsidiaries	5,525	11,375
Net realized losses		(759)
Management fee income	14,736	11,896
Total revenues	20,551	22,722
Operating expenses	11,395	10,265
Interest expense	4,545	4,512
Total expenses	15,940	14,777
Income before equity in undistributed earnings (loss) of subsidiaries and income tax benefit	4,611	7,945
Income tax benefit	(306)	(947)
Income before equity in undistributed earnings (loss) of subsidiaries	4,917	8,892
Equity in undistributed share of earnings (loss) in subsidiaries	5,430	(20,445)
Net income (loss)	10,347	(11,553)
Comprehensive income (loss)	$ 5,827	$ (9,690)