Consolidated Statements Of Changes In Stockholders' Equity (USD $)	Common Stock [Member]	Paid In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss), Net Of Tax [Member]	Total
Balance at Dec. 31, 2011	$ 6,509,267	$ 2,032,516	$ (7,606,974)	$ 34,431,296	$ (8,948)	$ 35,357,157
Balance, treasury stock, shares at Dec. 31, 2011			864,459
Balance, shares outstanding at Dec. 31, 2011	16,409,317
Balance, shares issued at Dec. 31, 2011	17,273,776
Redemption of stock, shares	(37,100)		37,100
Redemption of stock	0	0	(340,444)	0	0	(340,444)
Other comprehensive income (loss):
Unrealized gains on securities, net of taxes	0	0	0	0	21,080	21,080
Net income	0	0	0	3,144,116	0	3,144,116
Dividends per share	0	0	0	(1,146,317)	0	(1,146,317)
Balance at Jun. 30, 2012	6,509,267	2,032,516	(7,947,418)	36,429,095	12,132	37,035,592
Balance, treasury stock, shares at Jun. 30, 2012			901,559
Balance, shares issued at Jun. 30, 2012	17,273,776					17,273,776
Balance, shares outstanding at Jun. 30, 2012	16,372,217					16,372,217
Balance at Dec. 31, 2011	6,509,267	2,032,516	(7,606,974)	34,431,296	(8,948)	35,357,157
Balance, treasury stock, shares at Dec. 31, 2011			864,459
Balance, shares outstanding at Dec. 31, 2011	16,409,317
Balance, shares issued at Dec. 31, 2011	17,273,776
Redemption of stock, shares	(63,300)		63,300
Redemption of stock	0	0	(580,708)	0	0	(580,708)
Other comprehensive income (loss):
Unrealized gains on securities, net of taxes	0	0	0	0	62,539	62,539
Net income	0	0	0	5,619,798	0	5,619,798
Dividends per share	0	0	0	(1,146,317)	0	(1,146,317)
Balance at Dec. 31, 2012	6,509,267	2,032,516	(8,187,682)	38,904,777	53,591	39,312,469
Balance, treasury stock, shares at Dec. 31, 2012			927,759
Balance, shares issued at Dec. 31, 2012	17,273,776					17,273,776
Balance, shares outstanding at Dec. 31, 2012	16,346,017					16,346,017
Other comprehensive income (loss):
Unrealized gains on securities, net of taxes	0	0	0	0	(80,800)	(80,800)
Net income	0	0	0	3,769,579	0	3,769,579
Dividends per share	0	0	0	(1,307,861)	0	(1,307,861)
Balance at Jun. 30, 2013	$ 6,509,267	$ 2,032,516	$ (8,187,682)	$ 41,366,495	$ (27,209)	$ 41,693,387
Balance, treasury stock, shares at Jun. 30, 2013			927,759
Balance, shares issued at Jun. 30, 2013	17,273,776					17,273,776
Balance, shares outstanding at Jun. 30, 2013	16,346,017					16,346,017