Note 2 - Investment Securities (Details) - Unrealized Loss Positions of Available for Sale Securities (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Note 2 - Investment Securities (Details) - Unrealized Loss Positions of Available for Sale Securities [Line Items]
Estimated Fair Value, Less than 12 Months	$ 27,893
Unrealized Loss, Less than 12 Months	(1,158)
Estimated Fair Value, 12 Months or More	4,124	8,696
Unrealized Loss, 12 Months or More	(245)	(90)
Estimated Fair Value, Total	32,017	8,696
Unrealized Loss, Total	(1,403)	(90)
US Government Agencies Debt Securities [Member]
Note 2 - Investment Securities (Details) - Unrealized Loss Positions of Available for Sale Securities [Line Items]
Estimated Fair Value, Less than 12 Months	9,676
Unrealized Loss, Less than 12 Months	(341)
Estimated Fair Value, 12 Months or More	1,897	3,400
Unrealized Loss, 12 Months or More	(99)	(32)
Estimated Fair Value, Total	11,573	3,400
Unrealized Loss, Total	(440)	(32)
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Note 2 - Investment Securities (Details) - Unrealized Loss Positions of Available for Sale Securities [Line Items]
Estimated Fair Value, Less than 12 Months	5,964
Unrealized Loss, Less than 12 Months	(134)
Estimated Fair Value, 12 Months or More	1,042	3,701
Unrealized Loss, 12 Months or More	(26)	(35)
Estimated Fair Value, Total	7,006	3,701
Unrealized Loss, Total	(160)	(35)
US States and Political Subdivisions Debt Securities [Member]
Note 2 - Investment Securities (Details) - Unrealized Loss Positions of Available for Sale Securities [Line Items]
Estimated Fair Value, Less than 12 Months	12,253
Unrealized Loss, Less than 12 Months	(683)
Estimated Fair Value, 12 Months or More	1,185	1,595
Unrealized Loss, 12 Months or More	(120)	(23)
Estimated Fair Value, Total	13,438	1,595
Unrealized Loss, Total	$ (803)	$ (23)