23. FAIR VALUES - Summary of Assets And Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Fair Value, Inputs, Level 2 [Member]
Impaired Loans	$ 70,011	$ 101,642
Fair Value, Inputs, Level 3 [Member]
Other real estate owned	10,655	12,398
Impaired Loans	24,504	28,739
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Government Agencies Debt Securities [Member]
Available for sale investments	24,632	41,523
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Bonds
Available for sale investments	3,749	1,939
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortgage Backed Securities [Member]
Available for sale investments	39,338	54,899
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Taxable Municipals
Available for sale investments	2,292	3,281
Other Loans | Nonrecurring Basis | Fair Value, Inputs, Level 3 [Member]
Impaired Loans
Consumer Installment Loans | Nonrecurring Basis | Fair Value, Inputs, Level 3 [Member]
Impaired Loans	32	54
Agriculture | Nonrecurring Basis | Fair Value, Inputs, Level 3 [Member]
Impaired Loans	19	36
Commercial Real Estate [Member] | Nonrecurring Basis | Fair Value, Inputs, Level 3 [Member]
Impaired Loans	49	45
Commercial Real Estate [Member] | Nonrecurring Basis | Fair Value, Inputs, Level 3 [Member] | Real Estate [Member]
Impaired Loans	4,762	6,427
Farmland | Nonrecurring Basis | Fair Value, Inputs, Level 3 [Member] | Real Estate [Member]
Impaired Loans	4,187	4,416
Residential 1-4 Family | Nonrecurring Basis | Fair Value, Inputs, Level 3 [Member] | Real Estate [Member]
Impaired Loans	4,360	4,789
Multifamily | Nonrecurring Basis | Fair Value, Inputs, Level 3 [Member] | Real Estate [Member]
Impaired Loans	301	430
Construction and Land Development | Nonrecurring Basis | Fair Value, Inputs, Level 3 [Member] | Real Estate [Member]
Impaired Loans	$ 139	$ 144