Consolidated Balance Sheets (USD $)	Mar. 31, 2013	Dec. 31, 2012
Fixed maturities
Held to maturity, at amortized cost	$ 40,413,865	$ 42,100,196
Available for sale, at fair value	697,447,513	694,509,821
Equity securities, available for sale, at fair value	9,825,186	8,757,258
Investments in affiliates	37,460,515	37,235,530
Short-term investments, at cost, which approximates fair value	11,263,390	23,826,227
Total investments	796,410,469	806,429,032
Cash	23,928,800	19,801,290
Accrued investment income	6,556,997	6,332,085
Premiums receivable	127,621,896	117,196,478
Reinsurance receivable	220,553,215	215,893,322
Deferred policy acquisition costs	41,186,047	40,121,697
Deferred tax asset, net	6,817,041	6,267,536
Prepaid reinsurance premiums	114,688,465	111,156,162
Property and equipment, net	5,806,163	5,953,833
Federal income taxes recoverable	190,339
Due from affiliate	482,251
Goodwill	5,625,354	5,625,354
Other intangible assets	958,010	958,010
Other	1,207,634	1,154,388
Total assets	1,352,032,681	1,336,889,187
Liabilities
Unpaid losses and loss expenses	470,555,766	458,827,395
Unearned premiums	374,384,423	363,088,103
Accrued expenses	14,451,005	17,140,832
Reinsurance balances payable	14,977,203	13,941,337
Borrowings under lines of credit	61,500,000	52,000,000
Cash dividends declared to stockholders		3,066,532
Subordinated debentures	5,000,000	20,465,000
Accounts payable - securities	3,515,255
Federal income taxes payable		583,977
Due to affiliate		4,579,437
Drafts payable	621,768	863,589
Other	2,305,647	2,298,891
Total liabilities	947,311,067	936,855,093
Stockholders' Equity
Preferred stock, $.01 par value, authorized 2,000,000 shares; none issued
Additional paid-in capital	178,700,341	176,416,585
Accumulated other comprehensive income	22,344,360	26,394,577
Retained earnings	216,122,684	209,670,214
Treasury stock	(12,713,193)	(12,713,193)
Total stockholders' equity	404,721,614	400,034,094
Total liabilities and stockholders' equity	1,352,032,681	1,336,889,187
Common Class A
Stockholders' Equity
Common stock value	210,930	209,419
Total stockholders' equity	210,930	209,419
Common Class B
Stockholders' Equity
Common stock value	56,492	56,492
Total stockholders' equity	$ 56,492	$ 56,492