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Segment Information Selected Financial Information By Segment (Details) | 12 Months Ended
--- | ---
Dec. 31, 2017 USD ($) segment | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($)
Segment Reporting Information [Line Items] |  |  |
Number of reportable segments | segment | 1 |  |
Insurance And Other Services Revenue | $ 156,163,948 | $ 133,039,489 | $ 122,784,916
Investment income | 4,444,447 | 4,684,489 | 4,531,319
Net realized gain (loss) on investments | 1,040,901 | 768,436 | (116,163)
Total Revenues | 161,649,296 | 138,492,414 | 127,200,072
Operating expenses | 131,378,726 | 110,360,962 | 109,423,019
Income (loss) before income taxes | 30,270,570 | 28,131,452 | 17,777,053
Total assets | 248,912,859 | 228,938,122 | 211,522,029
Title Insurance |  |  |
Segment Reporting Information [Line Items] |  |  |
Insurance And Other Services Revenue | 154,333,311 | 128,408,746 | 118,144,981
Investment income | 4,992,127 | 4,329,605 | 4,073,857
Net realized gain (loss) on investments | 931,635 | 644,850 | (13,603)
Total Revenues | 160,257,073 | 133,383,201 | 122,205,235
Operating expenses | 129,095,939 | 105,885,770 | 104,594,829
Income (loss) before income taxes | 31,161,134 | 27,497,431 | 17,610,406
Total assets | 193,827,920 | 183,763,655 | 163,582,898
All Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Insurance And Other Services Revenue | 7,530,496 | 6,808,392 | 6,479,484
Investment income | 546,105 | 564,891 | 574,132
Net realized gain (loss) on investments | 109,266 | 123,586 | (102,560)
Total Revenues | 8,185,867 | 7,496,869 | 6,951,056
Operating expenses | 7,912,962 | 6,583,157 | 6,598,055
Income (loss) before income taxes | 272,905 | 913,712 | 353,001
Total assets | 55,084,939 | 45,174,467 | 47,939,131
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Insurance And Other Services Revenue | (5,699,859) | (2,177,649) | (1,839,549)
Investment income | (1,093,785) | (210,007) | (116,670)
Net realized gain (loss) on investments | 0 | 0 | 0
Total Revenues | (6,793,644) | (2,387,656) | (1,956,219)
Operating expenses | (5,630,175) | (2,107,965) | (1,769,865)
Income (loss) before income taxes | (1,163,469) | (279,691) | (186,354)
Total assets | $ 0 | $ 0 | $ 0

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