SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Loans Held for Investment (Details)	12 Months Ended
	Dec. 31, 2012
Accounts, Notes, Loans and Financing Receivable [Line Items]
Current Fiscal Year End Date	--12-31
Period After Which Loans are Placed on Nonaccrual Basis (in days)	90 days
Period After Which Loan is Returned to Accrual Status	6 months
Minimum [Member] | Commercial Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Maturity Period (in years)	3 years
Minimum [Member] | Non-Real Estate Secured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Maturity Period (in years)	5 years
Minimum [Member] | Working Capital and Equipment Loans [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Maturity Period (in years)	1 year
Minimum [Member] | Owner Occupied Real Estate [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Maturity Period (in years)	5 years
Loan Receivable Amortization Period (in years)	15 years
Minimum [Member] | Residential Mortgage [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Receivable Amortization Period (in years)	18 months
Maximum [Member] | Commercial Mortgage Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Maturity Period (in years)	7 years
Loan Receivable Amortization Period (in years)	25 years
Maximum [Member] | Construction Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loan Receivable Amortization Period (in years)	25 years
Maximum [Member] | Non-Real Estate Secured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Maturity Period (in years)	7 years
Maximum [Member] | Working Capital and Equipment Loans [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Maturity Period (in years)	7 years
Maximum [Member] | Owner Occupied Real Estate [Member] | Commercial and Industrial Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans Receivable, Maturity Period (in years)	7 years
Loan Receivable Amortization Period (in years)	25 years