Segment Information Selected Financial Information By Segment (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018 USD ($)	Sep. 30, 2017 USD ($)	Sep. 30, 2018 USD ($) segment	Sep. 30, 2017 USD ($)	Dec. 31, 2017 USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | segment			1
Insurance And Other Services Revenue	$ 43,186	$ 40,634	$ 115,058	$ 115,160
Investment income	4,887	1,697	8,286	4,903
Net realized gain (loss) on investments	188	804	629	990
Total Revenues	48,261	43,135	123,973	121,053
Operating expenses	35,701	34,218	97,374	97,339
Income (loss) before income taxes	12,560	8,917	26,599	23,714
Total assets	266,576	253,198	266,576	253,198	$ 248,913
Title Insurance
Segment Reporting Information [Line Items]
Insurance And Other Services Revenue	42,891	40,658	113,992	114,344
Investment income	4,247	1,503	6,986	4,380
Net realized gain (loss) on investments	141	749	548	893
Total Revenues	47,279	42,910	121,526	119,617
Operating expenses	35,359	34,125	95,575	95,802
Income (loss) before income taxes	11,920	8,785	25,951	23,815
Total assets	212,181	201,138	212,181	201,138
All Other
Segment Reporting Information [Line Items]
Insurance And Other Services Revenue	2,120	1,928	6,006	5,379
Investment income	640	194	1,300	523
Net realized gain (loss) on investments	47	55	81	97
Total Revenues	2,807	2,177	7,387	5,999
Operating expenses	2,033	1,911	6,337	5,771
Income (loss) before income taxes	774	266	1,050	228
Total assets	54,395	52,060	54,395	52,060
Intersegment Eliminations
Segment Reporting Information [Line Items]
Insurance And Other Services Revenue	(1,825)	(1,952)	(4,940)	(4,563)
Investment income	0	0	0	0
Net realized gain (loss) on investments	0	0	0	0
Total Revenues	(1,825)	(1,952)	(4,940)	(4,563)
Operating expenses	(1,691)	(1,818)	(4,538)	(4,234)
Income (loss) before income taxes	(134)	(134)	(402)	(329)
Total assets	$ 0	$ 0	$ 0	$ 0