Note 3 - Securities (Details) - Securities Available-for-Sale With Unrealized Losses (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013
Note 3 - Securities (Details) - Securities Available-for-Sale With Unrealized Losses [Line Items]
Less Than 12 Months - Fair Value	$ 29,281
Less Than 12 Months - Unrealized Loss	(647)
12 Months or More - Fair Value	29,281
12 Months or More - Unrealized Loss	(647)
Total - Fair Value	0
Total - Unrealized Loss	0
US Government-sponsored Enterprises Debt Securities [Member]
Note 3 - Securities (Details) - Securities Available-for-Sale With Unrealized Losses [Line Items]
Less Than 12 Months - Fair Value	7,844
Less Than 12 Months - Unrealized Loss	(178)
12 Months or More - Fair Value	7,844
12 Months or More - Unrealized Loss	(178)
Total - Fair Value	0
Total - Unrealized Loss	0
Mortgage-backed Securities, Issued by Private Enterprises [Member]
Note 3 - Securities (Details) - Securities Available-for-Sale With Unrealized Losses [Line Items]
Less Than 12 Months - Fair Value	21,437
Less Than 12 Months - Unrealized Loss	(469)
12 Months or More - Fair Value	21,437
12 Months or More - Unrealized Loss	(469)
Total - Fair Value	0
Total - Unrealized Loss	$ 0