Schedule II (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended				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	Dec. 31, 2012 Parent Company [Member]	Sep. 30, 2012 Scenario, Actual [Member]	Jun. 30, 2012 Scenario, Actual [Member]	Mar. 31, 2012 Scenario, Actual [Member]	Dec. 31, 2011 Scenario, Actual [Member]	Sep. 30, 2011 Scenario, Actual [Member]	Jun. 30, 2011 Scenario, Actual [Member]	Mar. 31, 2011 Scenario, Actual [Member]	Dec. 31, 2010 Scenario, Actual [Member]	Sep. 30, 2010 Scenario, Actual [Member]	Jun. 30, 2010 Scenario, Actual [Member]	Mar. 31, 2010 Scenario, Actual [Member]	Dec. 31, 2012 Scenario, Actual [Member]	Dec. 31, 2011 Scenario, Actual [Member]	Dec. 31, 2010 Scenario, Actual [Member]	Dec. 31, 2011 Scenario, Actual [Member] Parent Company [Member]	Dec. 31, 2010 Scenario, Actual [Member] Parent Company [Member]	Dec. 31, 2012 Scenario, Actual [Member] Parent Company [Member]
Revenues
Management fee from subsidiaries												$ 0															$ 0	$ 0
Net investment income	849	744	732	743	732	801	894	941	3,068		4,073	290	744	732	743	732	801	894	941	1,274	865	986	948		3,368	4,073	298	307
Other income									269		230	0	52	48	72	32	18	38	82	110	(6)	45	81		170	230	0	0
Revenues	71,605	77,104	71,058	71,879	75,363	73,282	66,172	66,772	291,646	281,589	226,399	290	77,104	71,058	71,879	75,363	73,282	66,172	66,772	60,404	62,677	52,465	50,853		281,589	226,399	298	307
Expenses
Personnel costs									48,648		36,361	0	12,708	12,367	11,392	11,182	10,945	11,428	10,992	8,422	9,526	9,332	9,081		44,547	36,361	0	0
Other operating expenses									30,354		24,426	1,036	7,959	6,937	6,739	7,361	7,267	9,298	7,214	5,951	6,625	6,058	5,792		31,140	24,426	558	598
Interest expense									6,624	7,641	8,464	210	2,025	1,590	1,652	1,779	1,906	1,925	2,031	2,342	2,246	1,985	1,891		7,641	8,464	1,062	904
Total expenses	65,909	70,654	64,991	66,560	67,887	67,075	64,130	62,018	268,114		203,026	1,246	70,654	64,991	66,560	67,887	67,075	64,130	62,018	54,617	55,779	46,686	45,944		261,110	203,026	1,620	1,502
Income before interest and income taxes interest												(956)															(1,322)	(1,195)
Income taxes	1,903	2,397	2,108	1,887	2,572	2,209	750	1,609	8,295	7,140	8,159	(335)	2,397	2,108	1,887	2,572	2,209	750	1,609	1,619	2,532	2,162	1,846		7,140	8,159	(357)	(287)
Income before equity in net income in subsidiaries												(621)															(965)	(908)
Equity in net income of subsidiaries												15,786															14,474	16,102
Net Income	3,783	4,024	3,944	3,414	4,903	3,997	1,290	3,319	15,165	13,509	15,194	15,165	4,024	3,944	3,414	4,903	3,997	1,290	3,319	4,117	4,366	3,663	3,048		13,509	15,194	13,509	15,194
Assets:
Investment in subsidiaries												120,406																	102,788
Cash and cash equivalents	15,209				31,339				15,209	31,339		279				31,339				43,389					31,339	43,389	138	21	138
Due from subsidiaries, net												13,960																	19,891
Notes receivable	11,290								11,290			4,999				3,603				1,485					3,603	1,485			3,351
Other assets	7,667								7,667			933				5,369				4,857					5,369	4,857			903
Total assets	728,011								728,011			140,577				605,353				535,202					605,353	535,202			127,071
Liabilities:
Long-term debt	89,438								89,438			0																	0
Other liabilities												194																	496
Total liabilities	577,041								577,041			194				478,267				415,502					478,267	415,502			496
Total stockholders' equity	150,970				127,086				150,970	127,086	119,701	140,383				127,086				119,700					127,086	119,700			126,575
Total liabilities and stockholders' equity	728,011								728,011			140,577				605,353				535,202					605,353	535,202			127,071
Operating Activities:
Net Income	3,783	4,024	3,944	3,414	4,903	3,997	1,290	3,319	15,165	13,509	15,194	15,165	4,024	3,944	3,414	4,903	3,997	1,290	3,319	4,117	4,366	3,663	3,048		13,509	15,194	13,509	15,194
Equity in net income of subsidiaries												(15,786)															(14,474)	(16,102)
Cash dividend from subsidiaries												0															0	0
Deferred income tax expense									4,252	1,721	4,337	0													1,721	4,337	0	93
Stock-based compensation expense									1,044			384													763	176	409	176
Other changes in assets and liabilities:
Net due to subsidiaries												5,931															14,012	(16,083)
Other assets and other liabilities												(332)															344	1,226
Net cash flows provided by (used in) operating activities									31,988			5,362												11,166	11,166	13,102	13,800	(15,496)
Investing Activities:
Proceeds from maturities of investments									11,138			0													9,691	12,114	0	0
Net paid for the acquisition of subsidiaries									(21,820)			0													(49,873)	(20,548)	0	0
Proceeds from notes receivable									(1,346)			(1,648)													(975)	684	84	703
Net cash flows (used in) provided by investing activities									(59,291)			(1,648)												(45,795)	(45,795)	(29,801)	84	703
Financing Activities:
Repayments of notes payable									(130,450)			0													(74,263)	(20,000)	(11,040)	(11,487)
Additional borrowings under notes payable												0															0	0
Net proceeds from issuance of common stock												0															0	40,203
Initial public offering costs									0			0													0	40,703	(826)	0
Net proceeds from exercise of stock options									0			20													(826)	0	651	203
(Purchase) issuance of treasury stock												(3,923)															(2,552)	0
Net proceeds received from stock issued in the Employee Stock Purchase Plan									(330)	58		330															0	0
Stockholder funds disbursed at purchase									0			0													0	(14,105)	0	(14,105)
Net cash flows (used in) provided by financing activities									11,173			(3,573)													22,579	30,148	(13,767)	14,814
Net increase in cash and cash equivalents									(16,130)			141													(12,050)	13,449	117	21
Cash and cash equivalents, beginning of period				31,339					31,339			138			31,339				43,389				29,940	31,339	43,389	29,940	21	0	138
Cash and cash equivalents, end of period	$ 15,209				$ 31,339				$ 15,209	$ 31,339		$ 279				$ 31,339				$ 43,389					$ 31,339	$ 43,389	$ 138	$ 21	$ 138