Note 2 - Securities (Detail) - Gross Unrealized Losses And Fair Value Of Securities Available For Sale Gross Of OTTI (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
US States and Political Subdivisions Debt Securities [Member]
Debt securities
Less Than 12 Months Fair Value	$ 3,665	$ 1,580
Less Than 12 Months Gross Unrealized Losses	(48)	(40)
Total Fair Value	3,665	1,580
Total Gross Unrealized Losses	(48)	(40)
Mortgage-backed Securities, Issued by US Government Sponsored Enterprises [Member]
Debt securities
Less Than 12 Months Fair Value	16
Total Fair Value	16
Residential Mortgage Backed Securities [Member]
Debt securities
Greater Than 12 Months Fair Value	170	168
Greater Than 12 Months Gross Unrealized Losses	(9)	(23)
Total Fair Value	170	168
Total Gross Unrealized Losses	(9)	(23)
Available For Sale Securities [Member]
Debt securities
Less Than 12 Months Fair Value	3,681	18,376
Less Than 12 Months Gross Unrealized Losses	(48)	(80)
Greater Than 12 Months Fair Value	170	178
Greater Than 12 Months Gross Unrealized Losses	(9)	(23)
Total Fair Value	3,851	18,554
Total Gross Unrealized Losses	(57)	(103)
US Treasury and Government [Member]
Debt securities
Less Than 12 Months Fair Value		4,993
Less Than 12 Months Gross Unrealized Losses		(7)
Total Fair Value		4,993
Total Gross Unrealized Losses		(7)
Corporate Debt Securities [Member]
Debt securities
Less Than 12 Months Fair Value		3,017
Less Than 12 Months Gross Unrealized Losses		(18)
Total Fair Value		3,017
Total Gross Unrealized Losses		(18)
US Government Agencies Debt Securities [Member]
Debt securities
Less Than 12 Months Fair Value		8,786
Less Than 12 Months Gross Unrealized Losses		(15)
Greater Than 12 Months Fair Value		10
Total Fair Value		8,796
Total Gross Unrealized Losses		$ (15)