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Schedule II [Disclosure] - Condensed Statement of Income (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Condensed Financial Statements, Captions [Line Items] |  |  |
Investment income – interest and dividends | $ 4,444,447 | $ 4,684,489 | $ 4,531,319
Net realized gain (loss) on investments | 1,040,901 | 768,436 | (116,163)
Other | 17,575,071 | 12,470,338 | 10,875,443
Total Revenues | 161,649,296 | 138,492,414 | 127,200,072
Salaries, employee benefits and payroll taxes | 39,012,354 | 31,372,099 | 28,041,213
Office occupancy and operations | 8,966,623 | 6,265,908 | 5,885,336
Business development | 3,164,730 | 2,511,699 | 2,373,270
Professional and contract labor fees | 1,825,598 | 2,115,754 | 2,691,411
Other expenses | 2,585,074 | 1,099,408 | 884,438
Income before Income Taxes | 30,270,570 | 28,131,452 | 17,777,053
Income Tax Benefit | 4,570,000 | 8,616,000 | 5,228,000
Net Income | 25,700,570 | 19,515,452 | 12,549,053
Net Loss (Income) Attributable to Noncontrolling Interests | (5,932) | (7,666) | 15,148
Net Income Attributable to the Company | $ 25,706,502 | $ 19,523,118 | $ 12,533,905
Basic Earnings per Common Share | $ 13.63 | $ 10.23 | $ 6.32
Weighted Average Shares Outstanding – Basic | 1,886,354 | 1,907,675 | 1,984,360
Diluted Earnings per Common Share | $ 13.56 | $ 10.19 | $ 6.30
Weighted Average Shares Outstanding – Diluted | 1,895,871 | 1,915,057 | 1,989,799
Common Stock, Dividends, Per Share, Declared | $ 3.75 | $ 0.72 | $ 0.40
Parent Company |  |  |
Condensed Financial Statements, Captions [Line Items] |  |  |
Investment income – interest and dividends | $ 501,653 | $ 525,453 | $ 535,963
Net realized gain (loss) on investments | 35,834 | 77,895 | (152,026)
Rental income | 812,951 | 772,123 | 765,134
Other | 220,497 | 77,074 | 385,058
Total Revenues | 1,570,935 | 1,452,545 | 1,534,129
Salaries, employee benefits and payroll taxes | 1,004,177 | 664,436 | 651,957
Office occupancy and operations | 213,547 | 236,954 | 239,176
Business development | 98,562 | 99,229 | 76,684
Taxes – other than payroll and income | 396,084 | 183,566 | 213,466
Professional and contract labor fees | 134,659 | 377,738 | 378,265
Other expenses | 269,300 | 246,375 | 198,788
Total operating expenses | 2,116,329 | 1,808,298 | 1,758,336
Equity in Net Income of Affiliated Companies | 25,633,964 | 19,665,205 | 12,640,260
Income before Income Taxes | 25,088,570 | 19,309,452 | 12,416,053
Income Tax Benefit | (612,000) | (206,000) | (133,000)
Net Income | 25,700,570 | 19,515,452 | 12,549,053
Net Loss (Income) Attributable to Noncontrolling Interests | (5,932) | (7,666) | 15,148
Net Income Attributable to the Company | $ 25,706,502 | $ 19,523,118 | $ 12,533,905
Basic Earnings per Common Share | $ 13.63 | $ 10.23 | $ 6.32
Weighted Average Shares Outstanding – Basic | 1,886,354 | 1,907,675 | 1,984,360
Diluted Earnings per Common Share | $ 13.56 | $ 10.19 | $ 6.30
Weighted Average Shares Outstanding – Diluted | 1,895,871 | 1,915,057 | 1,989,799
Common Stock, Dividends, Per Share, Declared | $ 3.75 | $ 0.72 | $ 0.40

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