Note 2 - Investment Securities (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Note 2 - Investment Securities (Details) [Line Items]
Available-for-sale Securities Pledged as Collateral	$ 277,000,000	$ 285,000,000
Available-for-sale Securities, Gross Unrealized Loss	12,900,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	3,609,000	856,000
Investment Securities Continuous Unrealized Loss Position Twelve Months or Longer	28.00%
Available-for-sale Securities	612,820,000	573,108,000
AFS Gross Unrealized Losses [Member]
Note 2 - Investment Securities (Details) [Line Items]
Available-for-sale Securities, Change in Net Unrealized Holding Gain (Loss) before Taxes	(11,600,000)
Corporate Debt Securities [Member]
Note 2 - Investment Securities (Details) [Line Items]
Available-for-sale Securities, Gross Unrealized Loss	1,049,000	856,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	1,049,000	856,000
Available-for-sale Securities	6,257,000	5,826,000
Mortgage-backed Securities [Member]
Note 2 - Investment Securities (Details) [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Aggregate Loss	1,000,000
Single Issuer Corporate Debt Security [Member]
Note 2 - Investment Securities (Details) [Line Items]
Available-for-sale Securities	$ 4,800,000