Condensed Consolidated Statements of Stockholders' Equity (Unaudited) (USD $)	Common Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2011	$ 1,152,737	$ 8,832,222	$ 13,605,484	$ 34,073,278	$ 57,663,721
Net income (loss)				1,269,130	1,269,130
Other comprehensive income (loss), net			10,809,479		10,809,479
Cash dividends				(265,129)	(265,129)
Issuances of common stock, net	4,305	75,775		15,724	95,804
Balance at Sep. 30, 2012	1,157,042	8,907,997	24,414,963	35,093,003	69,573,005
Balance at Dec. 31, 2012	1,141,886	8,908,243	22,539,724	35,642,931	68,232,784
Net income (loss)				1,183,569	1,183,569
Other comprehensive income (loss), net			(15,967,208)		(15,967,208)
Cash dividends				(285,471)	(285,471)
Repurchases of common stock, net	(8,724)			(192,628)	(201,352)
Balance at Sep. 30, 2013	$ 1,133,162	$ 8,908,243	$ 6,572,516	$ 36,348,401	$ 52,962,322