Note 16 - Fair Value Measurements (Details) - Financial Asset and Liabilities Measured on a Non-Recurring Basis (USD $) In Thousands, unless otherwise specified					12 Months Ended						12 Months Ended											12 Months Ended						12 Months Ended								12 Months Ended							12 Months Ended																				12 Months Ended												12 Months Ended								12 Months Ended											12 Months Ended
	Dec. 31, 2013 Commercial Loans Member Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Commercial Loans Member Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Commercial Loans Member Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Commercial Loans Member Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2011 Commercial Loans Member Impaired Loans [Member] Prior Year [Member]	Dec. 31, 2013 Commercial Loans Member Impaired Loans [Member] Current Period [Member]	Dec. 31, 2013 Commercial Mortgage Loans [Member] Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Commercial Mortgage Loans [Member] Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Commercial Mortgage Loans [Member] Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Commercial Mortgage Loans [Member] Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Commercial Mortgage Loans [Member] Impaired Loans [Member] Current Period [Member]	Dec. 31, 2013 Commercial Mortgage Loans [Member] Impaired Loans [Member] Current Period [Member]	Dec. 31, 2012 Commercial Mortgage Loans [Member] Impaired Loans [Member] Prior Year [Member]	Dec. 31, 2013 Construction Residential Member Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Construction Residential Member Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Construction Residential Member Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Construction Residential Member Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2013 Construction - Other Loans [Member] Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Construction - Other Loans [Member] Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Construction - Other Loans [Member] Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Construction - Other Loans [Member] Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Construction - Other Loans [Member] Impaired Loans [Member] Current Period [Member]	Dec. 31, 2012 Construction - Other Loans [Member] Impaired Loans [Member] Prior Year [Member]	Dec. 31, 2013 Residential Mortgage And Equity Lines Member Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Residential Mortgage And Equity Lines Member Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Residential Mortgage And Equity Lines Member Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Residential Mortgage And Equity Lines Member Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Residential Mortgage And Equity Lines Member Impaired Loans [Member] Current Period [Member]	Dec. 31, 2011 Residential Mortgage And Equity Lines Member Impaired Loans [Member] Prior Year [Member]	Dec. 31, 2013 Residential Mortgage And Equity Lines Member Impaired Loans [Member] Current Period [Member]	Dec. 31, 2012 Residential Mortgage And Equity Lines Member Impaired Loans [Member] Prior Year [Member]	Dec. 31, 2013 Land Loans Member Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Land Loans Member Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Land Loans Member Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Land Loans Member Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Land Loans Member Impaired Loans [Member] Current Period [Member]	Dec. 31, 2011 Land Loans Member Impaired Loans [Member] Prior Year [Member]	Dec. 31, 2012 Land Loans Member Impaired Loans [Member] Prior Year [Member]	Dec. 31, 2013 Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Impaired Loans [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Impaired Loans [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Impaired Loans [Member] Current Period [Member]	Dec. 31, 2011 Impaired Loans [Member] Prior Year [Member]	Dec. 31, 2013 Impaired Loans [Member] Current Period [Member]	Dec. 31, 2012 Impaired Loans [Member] Prior Year [Member]	Dec. 31, 2013 Other Real Estate Owned [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2012 Other Real Estate Owned [Member] Fair Value, Inputs, Level 1 [Member]		Dec. 31, 2013 Other Real Estate Owned [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2012 Other Real Estate Owned [Member] Fair Value, Inputs, Level 2 [Member]		Dec. 31, 2013 Other Real Estate Owned [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2012 Other Real Estate Owned [Member] Fair Value, Inputs, Level 3 [Member]		Dec. 31, 2013 Other Real Estate Owned [Member] Estimate of Fair Value Measurement [Member]		Dec. 31, 2012 Other Real Estate Owned [Member] Estimate of Fair Value Measurement [Member]		Dec. 31, 2012 Other Real Estate Owned [Member] Current Period [Member]		Dec. 31, 2011 Other Real Estate Owned [Member] Prior Year [Member]		Dec. 31, 2013 Other Real Estate Owned [Member] Current Period [Member]		Dec. 31, 2012 Other Real Estate Owned [Member] Prior Year [Member]		Dec. 31, 2013 Investments in Venture Capital [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Investments in Venture Capital [Member] Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Investments in Venture Capital [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Investments in Venture Capital [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Investments in Venture Capital [Member] Current Period [Member]	Dec. 31, 2011 Investments in Venture Capital [Member] Prior Year [Member]	Dec. 31, 2013 Investments in Venture Capital [Member] Current Period [Member]	Dec. 31, 2012 Investments in Venture Capital [Member] Prior Year [Member]	Dec. 31, 2013 Equity Investments [Member] Fair Value, Inputs, Level 1 [Member]	Dec. 31, 2012 Equity Investments [Member] Fair Value, Inputs, Level 1 [Member]	Dec. 31, 2013 Equity Investments [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Equity Investments [Member] Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Equity Investments [Member] Current Period [Member]	Dec. 31, 2011 Equity Investments [Member] Prior Year [Member]	Dec. 31, 2012 Equity Investments [Member] Prior Year [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 1 [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 1 [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 2 [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 2 [Member]	Dec. 31, 2013 Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2012 Fair Value, Inputs, Level 3 [Member]	Dec. 31, 2013 Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Estimate of Fair Value Measurement [Member]	Dec. 31, 2012 Current Period [Member]	Dec. 31, 2011 Prior Year [Member]	Dec. 31, 2013 Current Period [Member]	Dec. 31, 2012 Prior Year [Member]
Assets
Fair Value Measurements	$ 7,584	$ 3,492	$ 7,584	$ 3,492			$ 29,001	$ 11,295	$ 29,001	$ 11,295				$ 500	$ 500	$ 500	$ 500	$ 15,363	$ 46,153	$ 15,363	$ 46,153			$ 14,236	$ 11,206	$ 14,236	$ 11,206					$ 29	$ 297	$ 29	$ 297				$ 66,713	$ 72,943	$ 66,713	$ 72,943						[1]		[2]	$ 13,248	[1]	$ 27,149	[2]	$ 26,498	[1]	$ 4,841	[2]	$ 39,746	[1]	$ 31,990	[2]									$ 8,900	$ 9,001	$ 8,900	$ 9,001					$ 642	$ 142	$ 642	$ 142				$ 642	$ 142	$ 13,248	$ 27,149	$ 102,111	$ 86,785	$ 116,001	$ 114,076
Total Losses/(gains)					$ 877	$ 5,731					$ 440	$ 125	$ 440									$ 65	$ 65					$ 605	$ 820	$ 213	$ 605					$ 162	$ 46	$ 162					$ 1,272	$ 1,743	$ 6,069	$ 1,272																	$ 10,904	[2]	$ 7,003	[2]	$ (3,134)	[1]	$ 10,904	[1]					$ 309	$ 379	$ 409	$ 309					$ 181	$ 200	$ 181									$ 12,666	$ 9,325	$ 3,344	$ 12,666

[1] Other real estate owned balance of $53.0 million in the Consolidated Balance Sheets is net of estimated disposal costs.

[2] Other real estate owned balance of $46.4 million in the Consolidated Balance Sheets is net of estimated disposal costs.