Schedule II - Condensed Financial Information of Registrant (Parent Company Only) (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Investment loss, net of expenses									$ 15,293	$ 15,880	$ 14,849
Net realized gain									1,943	3,633	8,402
Management fee income									5,957	6,826	7,054
Other income									316	216	59
Revenues	88,623	85,620	84,571	82,986	83,102	83,748	78,513	77,408	341,800	322,771	307,060
Interest expense									4,634	4,631	4,598
Amortization of intangible assets									3,586	3,586	3,665
Loss before equity in undistributed earnings (loss) of subsidiaries and income tax benefit	2,287	5,021	(4,151)	217	435	706	(9,343)	(11,585)	3,374	(19,787)	8,371
Income tax benefit	504	1,350	(2,351)	23	94	602	(9,264)	(386)	(474)	(8,954)	863
Net income (loss)	1,783	3,671	(1,800)	194	341	104	(79)	(11,199)	3,848	(10,833)	7,508
Comprehensive income (loss)									4,977	(14,082)	8,451
Parent Company [Member]
Investment loss, net of expenses									(181)	(194)	(119)
Net realized gain									0	0	41
Management fee income									8,485	7,288	6,071
Other income									0	0	5
Revenues									8,304	7,094	5,998
Operating expenses									8,079	7,851	6,885
Interest expense									4,634	4,631	4,598
Amortization of intangible assets									17	42	150
Operating Costs and Expenses									12,730	12,524	11,633
Loss before equity in undistributed earnings (loss) of subsidiaries and income tax benefit									(4,426)	(5,430)	(5,635)
Income tax benefit									(1,627)	(1,669)	(1,608)
Loss before equity in undistributed earnings (loss) of subsidiaries									(2,799)	(3,761)	(4,027)
Equity in undistributed share of earnings (loss) in subsidiaries									6,323	(7,130)	11,430
Net income (loss)									3,524	(10,891)	7,403
Comprehensive income (loss)									$ 4,977	$ (14,082)	$ 8,451