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Schedule II - Condensed Statement of Cash Flows (Details) (USD $) | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Operating Activities |  |  |
Net income | $ 14,796,738 | $ 11,190,907 | $ 6,933,936
Depreciation | 669,727 | 486,922 | 475,679
Amortization, net | 507,111 | 468,006 | 338,967
Net realized loss (gain) on investments | (195,800) | (1,066,239) | (28,559)
Net (earnings) loss from other investments | (1,257,266) | (1,674,594) | (749,688)
(Benefit) provision for deferred income taxes | 1,804,000 | (292,000) | 21,000
Excess tax benefit | 946,605 | 22,101 | 0
(Increase) decrease in receivables | 1,569,167 | (4,912,295) | 646,786
Increase in income taxes recoverable | (366,772) | 0 | 0
(Increase) decrease in other assets | (2,906,224) | (407,252) | 77,056
(Decrease) increase in accounts payable and accrued liabilities | 4,923,858 | 2,372,995 | 1,913,799
Net cash used in operating activities | 16,251,090 | 8,707,514 | 9,007,159
Investing Activities |  |  |
Capital contribution to subsidiaries | 0 | (350,000) | 0
Purchases of available-for-sale securities | (23,466,037) | (15,899,439) | (15,318,418)
Purchases of short-term securities | (2,638,908) | (6,347,527) | (1,883,562)
Purchases of and net earnings from other investments | (1,369,210) | (3,441,412) | (853,599)
Proceeds from sales and maturities of available-for-sale securities | 9,892,634 | 15,646,381 | 9,851,523
Proceeds from sales and maturities of short-term securities | 8,280,183 | 6,892,141 | 14,974,850
Proceeds from sales and distributions of other investments | 2,107,675 | 2,301,647 | 861,865
Proceeds from sales of other assets | 40,366 | 220,455 | 0
Purchases of property | (1,424,108) | (568,728) | (361,207)
Proceeds from disposals of property | 24,335 | 65,837 | 31,157
Net cash provided by investing activities | (8,553,070) | (1,480,645) | 7,302,609
Financing Activities |  |  |
Repurchases of common stock | (4,262,260) | (3,975,532) | (5,940,463)
Exercise of options | 75,797 | 160,557 | 155,163
Dividends paid | (657,914) | (603,334) | (599,241)
Net cash used in financing activities | (4,881,277) | (4,459,109) | (6,384,541)
Net (Decrease) Increase in Cash and Cash Equivalents | 2,816,743 | 2,767,760 | 9,925,227
Cash and Cash Equivalents, Beginning of Period | 20,810,018 | 18,042,258 | 8,117,031
Cash and Cash Equivalents, End of Period | 23,626,761 | 20,810,018 | 18,042,258
Parent Company |  |  |
Operating Activities |  |  |
Net income | 14,796,738 | 11,190,907 | 6,933,936
Equity in net earnings of subsidiaries | (15,164,894) | (10,992,815) | (6,851,779)
Depreciation | 136,031 | 133,334 | 128,215
Amortization, net | 69,969 | 51,111 | (15,859)
Issuance of common stock in payment of bonuses and fees | 76,110 | 54,041 | 44,205
Net realized loss (gain) on investments | 50,778 | (616,001) | 81,389
Net (earnings) loss from other investments | (32,499) | 91,256 | 1,723
(Benefit) provision for deferred income taxes | (93,000) | 48,000 | (94,000)
Excess tax benefit | 9,042 | 0 | 0
(Increase) decrease in receivables | (146,247) | 368,574 | (838,208)
Increase in income taxes recoverable | (1,646,373) | (398,445) | (137,379)
(Increase) decrease in other assets | (101) | 20,224 | 21,836
(Decrease) increase in accounts payable and accrued liabilities | (8,118) | (124,799) | 445,758
Net cash used in operating activities | (1,952,564) | (174,613) | (280,163)
Investing Activities |  |  |
Capital contribution to subsidiaries | 0 | (250,000) | 0
Dividends received from subsidiaries | 9,252,919 | 5,609,489 | 223,331
Purchases of available-for-sale securities | (10,360,919) | (4,960,208) | (4,625,140)
Purchases of short-term securities | (58,283) | (3,565) | (203,530)
Purchases of and net earnings from other investments | (49,485) | (94,881) | (666,935)
Proceeds from sales and maturities of available-for-sale securities | 3,027,896 | 5,033,298 | 1,601,297
Proceeds from sales and maturities of short-term securities | 2,748,876 | 3,641,978 | 13,403,243
Proceeds from sales and distributions of other investments | 45,384 | 505,832 | 8,064
Proceeds from sales of other assets | 4,832 | 176,815 | 0
Purchases of property | (24,820) | (98,722) | (96,161)
Proceeds from disposals of property | 7,200 | 0 | 0
Net cash provided by investing activities | 4,593,600 | 9,560,036 | 9,644,169
Financing Activities |  |  |
Repurchases of common stock | (4,262,260) | (3,975,532) | (5,940,463)
Exercise of options | 75,797 | 160,557 | 155,163
Dividends paid | (657,914) | (603,334) | (599,241)
Net cash used in financing activities | (4,844,377) | (4,418,309) | (6,384,541)
Net (Decrease) Increase in Cash and Cash Equivalents | (2,203,341) | 4,967,114 | 2,979,465
Cash and Cash Equivalents, Beginning of Period | 9,414,297 | 4,447,183 | 1,467,718
Cash and Cash Equivalents, End of Period | 7,210,956 | 9,414,297 | 4,447,183
Supplemental Disclosures: |  |  |
Income tax payments, net | $ 5,583,000 | $ 4,392,000 | $ 2,911,000

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