Loans and Allowance for Loan Losses (Schedule of Loans Receivable) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 982,596	$ 996,340	$ 1,044,595
Construction and Land Development Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	67,814	69,325
Other Commercial Real Estate Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	499,370	505,180
Asset-based Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	36,689	37,540
Other Commercial Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	111,084	117,790
Home Equity Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	36,183	37,024
Other 1-4 Family Residential Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	189,927	186,815
Consumer Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, net of unearned income	$ 41,529	$ 42,666