Note 8 - Securities Available For Sale (Details) - Summary of Unrealized Losses and Fair Value for Securities (USD $) In Thousands, unless otherwise specified	Sep. 30, 2013	Dec. 31, 2012
Note 8 - Securities Available For Sale (Details) - Summary of Unrealized Losses and Fair Value for Securities [Line Items]
Number of Investments, Less than Twelve Months	15	1
Fair Value, Less than Twelve Months	$ 68,386	$ 4,996
Unrealized Losses, Less than Twelve Months	(643)	(4)
Number of Investments, Twelve Months and More	1	1
Fair Value, Twelve Months and More	245	245
Unrealized Losses, Twelve Months and More	(455)	(455)
Fair Value, Total	68,631	5,241
Unrealized Losses, Total	(1,098)	(459)
US Government Agencies Debt Securities [Member]
Note 8 - Securities Available For Sale (Details) - Summary of Unrealized Losses and Fair Value for Securities [Line Items]
Number of Investments, Less than Twelve Months	15	1
Fair Value, Less than Twelve Months	68,386	4,996
Unrealized Losses, Less than Twelve Months	(643)	(4)
Number of Investments, Twelve Months and More	0	0
Fair Value, Twelve Months and More	0	0
Unrealized Losses, Twelve Months and More	0	0
Fair Value, Total	68,386	4,996
Unrealized Losses, Total	(643)	(4)
Corporate Preferred Stock [Member]
Note 8 - Securities Available For Sale (Details) - Summary of Unrealized Losses and Fair Value for Securities [Line Items]
Number of Investments, Less than Twelve Months	0	0
Fair Value, Less than Twelve Months	0	0
Unrealized Losses, Less than Twelve Months	0	0
Number of Investments, Twelve Months and More	1	1
Fair Value, Twelve Months and More	245	245
Unrealized Losses, Twelve Months and More	(455)	(455)
Fair Value, Total	245	245
Unrealized Losses, Total	$ (455)	$ (455)