Schedule II [Disclosure] - Condensed Balance Sheets (Details) - USD ($)	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 20,214,468	$ 27,928,472	$ 21,790,068	$ 15,826,515
Available-for-sale, fixed maturity	103,341,083	101,934,077
Available for sale securities, equity securities	47,366,826	41,179,259
Short-term investments	23,779,672	6,558,840
Other investments	12,032,426	11,181,531
Premiums and fees receivable	10,159,519	8,654,161
Accrued interest and dividends	1,099,879	1,035,152
Property, net	10,172,904	8,753,466
Total Assets	248,912,859	228,938,122	211,522,029
Accounts payable and accrued liabilities	27,565,660	26,146,480
Deferred income taxes, net	8,625,759	11,118,256
Total liabilities	70,992,419	73,802,168
Preferred stock (1,000,000 authorized shares; no shares issued)	0	0
Common stock – no par value (10,000,000 authorized shares; 1,885,993 and 1,884,283 shares issued and outstanding as of December 31, 2017 and December 31, 2016, respectively, excluding in each period 291,676 shares of common stock held by the Company)	1	1
Retained earnings	161,890,660	143,283,621
Accumulated other comprehensive income	15,944,826	11,761,447	11,483,015	12,856,509
Total stockholders’ equity	177,835,487	155,045,069
Total Liabilities and Stockholders’ Equity	$ 248,912,859	$ 228,938,122
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, no par value
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	1,885,993	1,884,283
Common stock, shares outstanding	1,885,993	1,884,283
Common stock, held by Company's subsidiary	291,676	291,676
Parent Company
Condensed Financial Statements, Captions [Line Items]
Cash and cash equivalents	$ 5,872,001	$ 10,178,219	$ 8,347,004	$ 7,942,481
Available-for-sale, fixed maturity	22,713,771	16,505,866
Available for sale securities, equity securities	3,691,564	3,193,268
Short-term investments	5,808,966	3,162,283
Investments in affiliated companies	128,580,223	113,234,094
Other investments	5,167,102	4,318,296
Premiums and fees receivable	94,521	99,878
Other receivables	1,629,758	1,986,634
Income taxes recoverable	3,878,824	2,562,589
Accrued interest and dividends	198,297	86,481
Property, net	2,253,866	2,340,605
Total Assets	179,888,893	157,668,213
Accounts payable and accrued liabilities	1,916,253	2,370,963
Deferred income taxes, net	137,153	252,181
Total liabilities	2,053,406	2,623,144
Preferred stock (1,000,000 authorized shares; no shares issued)	0	0
Common stock – no par value (10,000,000 authorized shares; 1,885,993 and 1,884,283 shares issued and outstanding as of December 31, 2017 and December 31, 2016, respectively, excluding in each period 291,676 shares of common stock held by the Company)	1	1
Retained earnings	161,890,660	143,283,621
Accumulated other comprehensive income	15,944,826	11,761,447
Total stockholders’ equity	177,835,487	155,045,069
Total Liabilities and Stockholders’ Equity	$ 179,888,893	$ 157,668,213
Preferred stock, shares authorized	1,000,000	1,000,000
Preferred stock, shares issued	0	0
Common stock, no par value
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	1,885,993	1,884,283
Common stock, shares outstanding	1,885,993	1,884,283
Common stock, held by Company's subsidiary	291,676	291,676