Note 2 - Securities (Details) - Securities in an unrealized loss position (USD $) In Thousands, unless otherwise specified	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2012
Note 2 - Securities (Details) - Securities in an unrealized loss position [Line Items]
Less Than 12 Months - Fair Value	$ 35,759	$ 11,283
Less Than 12 Months - Unrealized Loss	1,923	74
12 Months or More - Fair Value	816	263
12 Months or More - Unrealized Loss	36	2
Total - Fair Value	36,575	11,546
Total - Unrealized Loss	1,959	76
US Government Agencies and Corporations (Member)
Note 2 - Securities (Details) - Securities in an unrealized loss position [Line Items]
Less Than 12 Months - Fair Value	20,628	5,479
Less Than 12 Months - Unrealized Loss	1,312	3
12 Months or More - Fair Value	0	0
12 Months or More - Unrealized Loss	0	0
Total - Fair Value	20,628	5,479
Total - Unrealized Loss	1,312	3
Mortgage Backed Securities [Member]
Note 2 - Securities (Details) - Securities in an unrealized loss position [Line Items]
Less Than 12 Months - Fair Value	2,080
Less Than 12 Months - Unrealized Loss	100
12 Months or More - Fair Value	0
12 Months or More - Unrealized Loss	0
Total - Fair Value	2,080
Total - Unrealized Loss	100
Obligations of States and Political Subdivisions (Member)
Note 2 - Securities (Details) - Securities in an unrealized loss position [Line Items]
Less Than 12 Months - Fair Value	13,051	5,804
Less Than 12 Months - Unrealized Loss	511	71
12 Months or More - Fair Value	816	263
12 Months or More - Unrealized Loss	36	2
Total - Fair Value	13,867	6,067
Total - Unrealized Loss	$ 547	$ 73