Consolidated Balance Sheets (USD $)	Mar. 31, 2014	Dec. 31, 2013
Fixed maturities
Held to maturity, at amortized cost	$ 296,360,179	$ 240,370,277
Available for sale, at fair value	431,527,749	403,651,965
Equity securities, available for sale, at fair value	22,297,723	12,422,837
Investments in affiliates	37,117,118	35,685,433
Short-term investments, at cost, which approximates fair value	16,367,589	99,677,795
Total investments	803,670,358	791,808,307
Cash	17,153,044	27,636,416
Accrued investment income	6,498,123	5,423,531
Premiums receivable	133,342,894	123,904,629
Reinsurance receivable	252,079,827	244,239,113
Deferred policy acquisition costs	45,407,383	43,627,510
Deferred tax asset, net	17,886,321	20,310,558
Prepaid reinsurance premiums	116,693,136	112,663,942
Property and equipment, net	7,053,122	6,424,703
Accounts receivable - securities		1,187,866
Federal income taxes recoverable	731,983	420,952
Goodwill	5,625,354	5,625,354
Other intangible assets	958,010	958,010
Other	1,225,194	1,179,611
Total assets	1,408,324,749	1,385,410,502
Liabilities
Unpaid losses and loss expenses	510,122,359	495,619,269
Unearned premiums	397,797,596	382,734,642
Accrued expenses	14,621,812	19,265,097
Reinsurance balances payable	12,510,502	17,948,808
Borrowings under lines of credit	61,000,000	58,000,000
Cash dividends declared to stockholders		3,299,182
Subordinated debentures	5,000,000	5,000,000
Accounts payable - securities		751,641
Due to affiliate	1,662,166	2,170,225
Drafts payable	1,083,987	1,386,285
Other	2,940,998	2,358,242
Total liabilities	1,006,739,420	988,533,391
Stockholders' Equity
Preferred stock, $.01 par value, authorized 2,000,000 shares; none issued
Additional paid-in capital	190,342,555	189,116,410
Accumulated other comprehensive income (loss)	1,936,592	(2,312,890)
Retained earnings	222,133,113	222,888,887
Treasury stock	(13,101,682)	(13,089,656)
Total stockholders' equity	401,585,329	396,877,111
Total liabilities and stockholders' equity	1,408,324,749	1,385,410,502
Class A common stock [Member]
Stockholders' Equity
Common stock value	218,259	217,868
Total stockholders' equity	218,259	217,868
Class B common stock [Member]
Stockholders' Equity
Common stock value	56,492	56,492
Total stockholders' equity	$ 56,492	$ 56,492