Loans, Net, Past Due (Details) (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011		Dec. 31, 2010
Past due loans by class of loans [Abstract]
30 to 59 Days Past Due	$ 2,264,000		$ 11,000,000
60 to 89 Days Past Due	1,091,000		3,578,000
90 Days Or Greater	10,241,000		12,705,000
Total Past Due	13,596,000		27,283,000
Current	695,881,000		644,110,000
Total ending loan balances	709,477,000	[1]	671,393,000	[1]
Nonaccrual	21,664,000		25,346,000
Past due 90 days or more and still accruing	1,044,000		1,233,000
Interest on non-accrual loans foregone	1,350,000		1,500,000		722,000
Real Estate Loans Construction [Member]
Past due loans by class of loans [Abstract]
30 to 59 Days Past Due	0		696,000
60 to 89 Days Past Due	108,000		0
90 Days Or Greater	2,043,000		3,285,000
Total Past Due	2,151,000		3,981,000
Current	48,067,000		38,227,000
Total ending loan balances	50,218,000		42,208,000
Nonaccrual	2,861,000		3,804,000
Past due 90 days or more and still accruing	780,000		86,000
Real Estate Loans Secured by Farmland [Member]
Past due loans by class of loans [Abstract]
30 to 59 Days Past Due	415,000		415,000
60 to 89 Days Past Due	0		0
90 Days Or Greater	0		0
Total Past Due	415,000		415,000
Current	11,461,000		9,632,000
Total ending loan balances	11,876,000		10,047,000
Real Estate Loans Secured by 1 - 4 Family Residential [Member]
Past due loans by class of loans [Abstract]
30 to 59 Days Past Due	1,625,000		2,036,000
60 to 89 Days Past Due	568,000		1,721,000
90 Days Or Greater	1,910,000		7,639,000
Total Past Due	4,103,000		11,396,000
Current	256,517,000		225,364,000
Total ending loan balances	260,620,000		236,760,000
Nonaccrual	8,761,000		11,839,000
Past due 90 days or more and still accruing	228,000		1,097,000
Other Real Estate Loans [Member]
Past due loans by class of loans [Abstract]
30 to 59 Days Past Due	197,000		6,079,000
60 to 89 Days Past Due	361,000		1,736,000
90 Days Or Greater	6,112,000		1,466,000
Total Past Due	6,670,000		9,281,000
Current	248,260,000		266,147,000
Total ending loan balances	254,930,000		275,428,000
Nonaccrual	7,866,000		7,567,000
Past due 90 days or more and still accruing	0		0
Commercial Loans [Member]
Past due loans by class of loans [Abstract]
30 to 59 Days Past Due	0		1,751,000
60 to 89 Days Past Due	44,000		121,000
90 Days Or Greater	144,000		315,000
Total Past Due	188,000		2,187,000
Current	118,385,000		92,240,000
Total ending loan balances	118,573,000		94,427,000
Nonaccrual	2,146,000		2,136,000
Past due 90 days or more and still accruing	34,000		50,000
Consumer Loans [Member]
Past due loans by class of loans [Abstract]
30 to 59 Days Past Due	27,000		23,000
60 to 89 Days Past Due	10,000		0
90 Days Or Greater	32,000		0
Total Past Due	69,000		23,000
Current	13,191,000		12,500,000
Total ending loan balances	13,260,000		12,523,000
Nonaccrual	30,000		0
Past due 90 days or more and still accruing	$ 2,000		$ 0

[1] Gross loan balances at December 31, 2012 and 2011 are net of deferred loan costs of $2.1 million and $1.9 million respectively.