Note 5 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans - USD ($) $ in Thousands		Sep. 30, 2015	Dec. 31, 2014	Sep. 30, 2014
Note 5 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual loan, recorded investment	[1],[2]	$ 14,467	$ 22,443	$ 29,343
Commercial Portfolio Segment [Member]
Note 5 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual loan, recorded investment		4,828	12,975	15,431
Income Producing Portfolio Segment [Member]
Note 5 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual loan, recorded investment		6,721	2,645	2,553
Owner Occupied Portfolio Segment [Member]
Note 5 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual loan, recorded investment		1,281	1,324	3,502
Residential Portfolio Segment [Member]
Note 5 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual loan, recorded investment		333	346	350
Construction Portfolio Segment [Member]
Note 5 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual loan, recorded investment		571	3,697	6,919
Home Equity Portfolio Segment [Member]
Note 5 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual loan, recorded investment		661	1,398	$ 588
Other Consumer Portfolio Segment [Member]
Note 5 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Nonaccrual loan, recorded investment		$ 72	$ 58

[1] Excludes troubled debt restructurings ("TDRs") that were performing under their restructured terms totaling $15.2 million at September 30, 2015, $13.5 million at December 31, 2014 and $7.9 million at September 30, 2014.

[2] Gross interest income of $822 thousand would have been recorded for the nine months ended September 30, 2015 if nonaccrual loans shown above had been current and in accordance with their original terms, while interest actually recorded on such loans was $127 thousand. See Note 1 to the consolidated financial statements for a description of the Company's policy for placing loans on nonaccrual status.