4. Allowance for Loan Losses (Details 3) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Construction/Land Development	$ 69,528	$ 71,251
Farmland	11,881	12,259
Real Estate	146,155	144,066
Multi-Family	9,799	9,357
Commercial Real Estate	122,723	123,819
Home Equity - closed end	10,418	10,984
Home Equity - open end	48,943	49,762
Commercial & Industrial (Non-Real Estate)	25,451	25,110
Total	444,898	446,608
Grade 1 Minimal Risk [Member]
Construction/Land Development
Farmland	69	70
Real Estate
Multi-Family
Commercial Real Estate
Home Equity - closed end	12
Home Equity - open end
Commercial & Industrial (Non-Real Estate)	259
Total	340	70
Grade 2 Modest Risk [Member]
Construction/Land Development	350	831
Farmland
Real Estate	328	448
Multi-Family	597	632
Commercial Real Estate	2,016	2,033
Home Equity - closed end
Home Equity - open end	1,458	1,460
Commercial & Industrial (Non-Real Estate)	82	87
Total	4,831	5,491
Grade 3 Average Risk [Member]
Construction/Land Development	3,105	4,400
Farmland	1,372	1,544
Real Estate	69,592	36,342
Multi-Family	4,307	2,185
Commercial Real Estate	19,414	18,663
Home Equity - closed end	5,021	2,280
Home Equity - open end	15,069	15,294
Commercial & Industrial (Non-Real Estate)	3,610	3,505
Total	121,490	84,213
Grade 4 Acceptable Risk [Member]
Construction/Land Development	20,948	16,616
Farmland	4,121	4,327
Real Estate	47,281	69,670
Multi-Family	430	1,815
Commercial Real Estate	57,046	56,624
Home Equity - closed end	2,878	6,198
Home Equity - open end	26,799	26,595
Commercial & Industrial (Non-Real Estate)	16,630	15,448
Total	176,133	197,293
Grade 5 Marginally Acceptable [Member]
Construction/Land Development	12,714	15,783
Farmland	4,413	4,214
Real Estate	17,042	22,413
Multi-Family	4,465	4,725
Commercial Real Estate	27,180	28,650
Home Equity - closed end	1,458	1,268
Home Equity - open end	4,373	4,735
Commercial & Industrial (Non-Real Estate)	3,386	3,621
Total	75,031	85,409
Grade 6 Watch [Member]
Construction/Land Development	7,207	9,013
Farmland	326	524
Real Estate	5,832	6,472
Multi-Family
Commercial Real Estate	10,463	4,910
Home Equity - closed end	357	530
Home Equity - open end	658	694
Commercial & Industrial (Non-Real Estate)	931	531
Total	25,774	22,674
Grade 7 Substandard [Member]
Construction/Land Development	25,204	24,608
Farmland	1,580	1,580
Real Estate	6,080	8,721
Multi-Family
Commercial Real Estate	6,604	12,939
Home Equity - closed end	692	708
Home Equity - open end	586	869
Commercial & Industrial (Non-Real Estate)	553	1,918
Total	41,299	51,343
Grade 8 Doubtful [Member]
Construction/Land Development
Farmland
Real Estate
Multi-Family
Commercial Real Estate
Home Equity - closed end
Home Equity - open end		115
Commercial & Industrial (Non-Real Estate)
Total		$ 115