Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013		Dec. 31, 2012		Sep. 30, 2012
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual Loans	$ 27,546	[1],[2]	$ 30,684	[1],[2]	$ 32,423	[1],[2]
Commercial Loan [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual Loans	7,607		4,799		5,282
Commercial Real Estate Investment [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual Loans	3,081		3,458		3,647
Commercial Real Estate Owner Occupied [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual Loans	6,426		2,578		2,374
Residential Mortgage [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual Loans	895		699		713
Home Equity Line of Credit [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual Loans	511		513		670
Consumer, Other [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual Loans	45		43		7
Construction Loans [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual Loans	$ 8,981		$ 18,594		$ 19,730

[1] Excludes performing troubled debt restructurings ("TDRs") totaling $10.0 million at September 30, 2013, $15.3 million at December 31, 2012 and $8.8 million at September 30, 2012.

[2] Gross interest income that would have been recorded in 2013 if nonaccrual loans shown above had been current and in accordance with their original terms $582 thousand and $1.4 million, while interest actually recorded on such loans was $102 thousand for the three and nine months ended September 30, 2013. See Note 1 to the consolidated financial statements for a description of the Company's policy for placing loans on nonaccrual status.