Schedule II [Disclosure] - Condensed Statement of Cash Flows (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Operating Activities
Net income	$ 12,549,053	$ 9,672,498	$ 14,796,738
Depreciation	1,105,839	833,104	669,727
Amortization, net	728,510	630,782	507,111
Net loss on disposals of property	(24,867)	24,608	7,831
Net (earnings) loss from other investments	(2,002,276)	(1,450,980)	(1,257,266)
Provision (benefit) for deferred income taxes	1,015,000	611,000	1,804,000
Increase in receivables	217,594	206,041	2,287,489
Decrease (increase) in income taxes recoverable	0	366,772	(366,772)
Decrease (increase) in other assets	(4,879,418)	(393,359)	(2,906,224)
Increase (decrease) in accounts payable and accrued liabilities	6,689,204	(2,080,492)	4,923,858
Net cash provided by (used in) operating activities	16,889,631	9,683,980	15,304,485
Investing Activities
Purchases of available-for-sale securities	(20,164,353)	(30,899,452)	(23,466,037)
Purchases of short-term securities	(4,593,240)	(911,188)	(2,638,908)
Purchases of and net earnings from other investments	(3,717,978)	(1,689,950)	(1,369,210)
Proceeds from sales and maturities of available-for-sale securities	22,151,408	12,472,817	9,892,634
Proceeds from sales and maturities of short-term securities	304,827	6,260,568	8,280,183
Proceeds from sales and distributions of other investments	3,911,286	1,584,337	2,107,675
Proceeds from sales of other assets	149,128	38,052	40,366
Purchases of property	(2,742,619)	(2,017,379)	(1,424,108)
Proceeds from disposals of property	75,060	24,400	24,335
Net cash provided by (used in) investing activities	(4,699,081)	(15,653,070)	(8,553,070)
Financing Activities
Repurchases of common stock	(5,483,953)	(1,055,765)	(4,262,260)
Exercise of options	54,988	27,100	75,797
Excess tax benefit	26,875	15,999	946,605
Dividends paid	(789,907)	(650,433)	(657,914)
Net cash provided by (used in) financing activities	(6,226,997)	(1,831,156)	(3,934,672)
Net Increase (Decrease) in Cash and Cash Equivalents	5,963,553	(7,800,246)	2,816,743
Cash and Cash Equivalents, Beginning of Period	15,826,515	23,626,761	20,810,018
Cash and Cash Equivalents, End of Period	21,790,068	15,826,515	23,626,761
Parent Company
Operating Activities
Net income	12,549,053	9,672,498	14,796,738
Equity in net earnings of subsidiaries	(12,640,260)	(9,777,925)	(15,164,894)
Depreciation	112,690	136,369	136,031
Amortization, net	192,654	210,768	69,969
Issuance of common stock in payment of bonuses and fees	137,759	164,730	76,110
Net loss on disposals of property	1,683	2,722	0
Net realized loss (gain) on investments	152,026	(19,231)	50,778
Net (earnings) loss from other investments	(237,686)	322	(32,499)
Provision (benefit) for deferred income taxes	13,000	(40,000)	(93,000)
Increase in receivables	(847,177)	(685,052)	(146,247)
Decrease (increase) in income taxes recoverable	142,928	1,354,735	(1,646,373)
Decrease (increase) in other assets	7,852	(24,650)	(101)
Increase (decrease) in accounts payable and accrued liabilities	1,192,927	516,252	(8,118)
Net cash provided by (used in) operating activities	777,449	1,511,538	(1,961,606)
Investing Activities
Dividends received from subsidiaries	7,630,835	5,051,664	9,252,919
Purchases of available-for-sale securities	(260,044)	(6,883,612)	(10,360,919)
Purchases of short-term securities	(2,721,578)	(104,207)	(58,283)
Purchases of and net earnings from other investments	(2,007,798)	(964,197)	(49,485)
Proceeds from sales and maturities of available-for-sale securities	2,475,557	1,631,987	3,027,896
Proceeds from sales and maturities of short-term securities	0	2,033,634	2,748,876
Proceeds from sales and distributions of other investments	734,170	123,017	45,384
Proceeds from sales of other assets	0	0	4,832
Purchases of property	(32,071)	(5,200)	(24,820)
Proceeds from disposals of property	0	0	7,200
Net cash provided by (used in) investing activities	5,819,071	883,086	4,593,600
Financing Activities
Repurchases of common stock	(5,483,953)	(1,055,765)	(4,262,260)
Exercise of options	54,988	27,100	75,797
Excess tax benefit	26,875	15,999	9,042
Dividends paid	(789,907)	(650,433)	(657,914)
Net cash provided by (used in) financing activities	(6,191,997)	(1,663,099)	(4,835,335)
Net Increase (Decrease) in Cash and Cash Equivalents	404,523	731,525	(2,203,341)
Cash and Cash Equivalents, Beginning of Period	7,942,481	7,210,956	9,414,297
Cash and Cash Equivalents, End of Period	8,347,004	7,942,481	7,210,956
Supplemental Disclosures:
Income tax payments, net	$ 4,598,000	$ 2,699,000	$ 5,583,000