Schedule II - Condensed Statement of Cash Flows (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Operating Activities
Net income	$ 9,672,498	$ 14,796,738	$ 11,190,907
Depreciation	833,104	669,727	486,922
Amortization, net	630,782	507,111	468,006
Net loss (gain) on disposals of property	24,608	7,831	(28,538)
Net loss (earnings) from other investments	(1,450,980)	(1,257,266)	(1,674,594)
(Benefit) provision for deferred income taxes	611,000	1,804,000	(292,000)
(Increase) decrease in receivables	206,041	2,287,489	(4,227,714)
Increase (Decrease) in Income Taxes Receivable	(366,772)	366,772	0
(Increase) decrease in other assets	(393,359)	(2,906,224)	(407,252)
Increase (decrease) in accounts payable and accrued liabilities	(2,080,492)	4,923,858	2,372,995
Net cash provided by (used in) operating activities	9,683,980	15,304,485	8,685,413
Investing Activities
Capital contribution to subsidiaries	0	0	(350,000)
Purchases of available-for-sale securities	(30,899,452)	(23,466,037)	(15,899,439)
Purchases of short-term securities	(911,188)	(2,638,908)	(6,347,527)
Purchases of and net earnings from other investments	(1,689,950)	(1,369,210)	(3,441,412)
Proceeds from sales and maturities of available-for-sale securities	12,472,817	9,892,634	15,646,381
Proceeds from sales and maturities of short-term securities	6,260,568	8,280,183	6,892,141
Proceeds from sales and distributions of other investments	1,584,337	2,107,675	2,301,647
Proceeds from sales of other assets	38,052	40,366	220,455
Purchases of property	(2,017,379)	(1,424,108)	(568,728)
Proceeds from disposals of property	24,400	24,335	65,837
Net cash provided by investing activities	(15,653,070)	(8,553,070)	(1,480,645)
Financing Activities
Repurchases of common stock	(1,055,765)	(4,262,260)	(3,975,532)
Exercise of options	27,100	75,797	160,557
Excess Tax Benefit from Share-based Compensation, Financing Activities	15,999	946,605	22,101
Dividends paid	(650,433)	(657,914)	(603,334)
Net cash used in financing activities	(1,831,156)	(3,934,672)	(4,437,008)
Net Increase (Decrease) in Cash and Cash Equivalents	(7,800,246)	2,816,743	2,767,760
Cash and Cash Equivalents, Beginning of Period	23,626,761	20,810,018	18,042,258
Cash and Cash Equivalents, End of Period	15,826,515	23,626,761	20,810,018
Parent Company
Operating Activities
Net income	9,672,498	14,796,738	11,190,907
Equity in net earnings of subsidiaries	(9,777,925)	(15,164,894)	(10,992,815)
Depreciation	136,369	136,031	133,334
Amortization, net	210,768	69,969	51,111
Issuance of common stock in payment of bonuses and fees	164,730	76,110	54,041
Net loss (gain) on disposals of property	2,722	0	0
Net realized (gain) loss on investments	19,231	(50,778)	616,001
Net loss (earnings) from other investments	322	(32,499)	91,256
(Benefit) provision for deferred income taxes	(40,000)	(93,000)	48,000
(Increase) decrease in receivables	(685,052)	(146,247)	368,574
Increase (Decrease) in Income Taxes Receivable	(1,354,735)	1,646,373	398,445
(Increase) decrease in other assets	(24,650)	(101)	20,224
Increase (decrease) in accounts payable and accrued liabilities	516,252	(8,118)	(124,799)
Net cash provided by (used in) operating activities	1,511,538	(1,961,606)	(174,613)
Investing Activities
Capital contribution to subsidiaries	0	0	(250,000)
Dividends received from subsidiaries	5,051,664	9,252,919	5,609,489
Purchases of available-for-sale securities	(6,883,612)	(10,360,919)	(4,960,208)
Purchases of short-term securities	(104,207)	(58,283)	(3,565)
Purchases of and net earnings from other investments	(964,197)	(49,485)	(94,881)
Proceeds from sales and maturities of available-for-sale securities	1,631,987	3,027,896	5,033,298
Proceeds from sales and maturities of short-term securities	2,033,634	2,748,876	3,641,978
Proceeds from sales and distributions of other investments	123,017	45,384	505,832
Proceeds from sales of other assets	0	4,832	176,815
Purchases of property	(5,200)	(24,820)	(98,722)
Proceeds from disposals of property	0	7,200	0
Net cash provided by investing activities	883,086	4,593,600	9,560,036
Financing Activities
Repurchases of common stock	(1,055,765)	(4,262,260)	(3,975,532)
Exercise of options	27,100	75,797	160,557
Excess Tax Benefit from Share-based Compensation, Financing Activities	15,999	9,042	0
Dividends paid	(650,433)	(657,914)	(603,334)
Net cash used in financing activities	(1,663,099)	(4,835,335)	(4,418,309)
Net Increase (Decrease) in Cash and Cash Equivalents	731,525	(2,203,341)	4,967,114
Cash and Cash Equivalents, Beginning of Period	7,210,956	9,414,297	4,447,183
Cash and Cash Equivalents, End of Period	7,942,481	7,210,956	9,414,297
Supplemental Disclosures:
Income tax payments, net	$ 2,699,000	$ 5,583,000	$ 4,392,000