Loans And Allowance For Loan Losses (Narrative) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2012 D Y	Dec. 31, 2011
Accounts, Notes, Loans And Financing Receivable [Line Items]
Commercial construction loans	$ 189,233	$ 210,098
Specific reserves in allowance for loan losses, TDRs	0	41
Pooled reserves for all other classes of loans	1,082	847
Payoffs received on loans in excess of expected cash flows	117	709
Restructured loans returned to performing status	1,582
Number of days past due to be included in a TDRs	90
Number of days past due for loan to be in default	90
Minimum corporation reserves for commercial loan	500
Minimum amount to allocate specific valuation allowance	500
Migration model period, years	3
Maximum [Member]
Accounts, Notes, Loans And Financing Receivable [Line Items]
Number of days principal or interest remained unpaid	180
Valuation for impairment of loans	500
Higher loss rates for commercial loans	500
Minimum [Member]
Accounts, Notes, Loans And Financing Receivable [Line Items]
Number of days principal or interest remained unpaid	90
Management assessment of impaired commercial loans	500
Commercial Construction Loans [Member]
Accounts, Notes, Loans And Financing Receivable [Line Items]
Percentage of loan portfolio	2.40%	3.10%
Owner-Occupied [Member]
Accounts, Notes, Loans And Financing Receivable [Line Items]
Percentage of commercial real estate loans	54
Non-Owner-Occupied [Member]
Accounts, Notes, Loans And Financing Receivable [Line Items]
Percentage of commercial real estate loans	46
Consumer Finance [Member]
Accounts, Notes, Loans And Financing Receivable [Line Items]
Percentage of loan portfolio	2.00%	2.40%
Consumer loans	$ 157,885	$ 163,856
Land-Related [Member] | Florida [Member]
Accounts, Notes, Loans And Financing Receivable [Line Items]
Percentage of loan portfolio	32.00%
Non Land-Related [Member] | Florida [Member]
Accounts, Notes, Loans And Financing Receivable [Line Items]
Percentage of loan portfolio	68.00%