Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014		Dec. 31, 2013		Mar. 31, 2013
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Financing Receivable Recorded Investment Nonaccrual Status	$ 36,327	[1],[2]	$ 24,702	[1],[2]	$ 28,166	[1],[2]
Commercial Loan [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Financing Receivable Recorded Investment Nonaccrual Status	17,646		6,779		4,039
Commercial Real Estate Investment [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Financing Receivable Recorded Investment Nonaccrual Status	2,271		2,525		3,269
Commercial Real Estate Owner Occupied [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Financing Receivable Recorded Investment Nonaccrual Status	7,323		5,452		2,368
Residential Mortgage [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Financing Receivable Recorded Investment Nonaccrual Status	771		887		691
Home Equity Line of Credit [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Financing Receivable Recorded Investment Nonaccrual Status	598		623		481
Consumer, Other [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Financing Receivable Recorded Investment Nonaccrual Status	60		70
Construction Loans [Member]
Note 4 - Loans and Allowance for Credit Losses (Details) - Nonaccrual Loans [Line Items]
Financing Receivable Recorded Investment Nonaccrual Status	$ 7,658		$ 8,366		$ 17,318

[1] Excludes troubled debt restructurings ("TDRs") that were performing under their restructured terms totaling $7.9 million at March 31, 2014, and December 31, 2013, and $14.8 million at March 31, 2013.

[2] Gross interest income that would have been recorded in 2014 if nonaccrual loans shown above had been current and in accordance with their original terms was $549 thousand, while interest actually recorded on such loans was $461 thousand. See Note 1 to the consolidated financial statements for a description of the Company's policy for placing loans on nonaccrual status.