Note 6 - Investments Schedule of Unrealized Losses (Details) (USD $)	Mar. 31, 2013 security	Dec. 31, 2012 security	Mar. 31, 2012
Schedule of Securities With Unrealized Losses
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	$ 0		$ 0
Continuous Loss Position Less Than Twelve Months
Number of Securities	1	1
Fair value HTM And AFS state and municipal obligations	29,000	31,000
Unrealized losses AFS And HTM state and municipal obligations	2,000	2,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	7	8
Fair value HTM And AFS state and municipal obligations	10,844,000	11,333,000
Unrealized Losses AFS And HTM state and municipal obligations	434,000	408,000
Continuous Loss Position, Total
Number of securities	8	9
Fair Value HTM And AFS state and municipal obligations	10,873,000	11,364,000
Unrealized losses AFS and HTM state and municipal obligations	436,000	410,000
State and municipal obligations
Continuous Loss Position Less Than Twelve Months
Number of Securities	0	0
Fair value HTM And AFS state and municipal obligations	0	0
Unrealized losses AFS And HTM state and municipal obligations	0	0
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	2	2
Fair value HTM And AFS state and municipal obligations	5,989,000	6,004,000
Unrealized Losses AFS And HTM state and municipal obligations	63,000	49,000
Continuous Loss Position, Total
Number of securities	2	2
Fair Value HTM And AFS state and municipal obligations	5,989,000	6,004,000
Unrealized losses AFS and HTM state and municipal obligations	63,000	49,000
Corporate bonds and notes
Continuous Loss Position Less Than Twelve Months
Number of Securities	0	0
Fair value available-for-sale securities	0	0
Unrealized losses available-for-sale securities	0	0
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	5	6
Fair value available-for-sale securities	4,855,000	5,329,000
Unrealized losses available-for-sale securities	371,000	359,000
Continuous Loss Position, Total
Number of securities	5	6
Fair value available-for-sale securities	4,855,000	5,329,000
Unrealized losses available-for-sale securities	371,000	359,000
RMBS
Continuous Loss Position Less Than Twelve Months
Number of Securities	1	1
Fair value available-for-sale securities	29,000	31,000
Unrealized losses available-for-sale securities	2,000	2,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	0	0
Fair value available-for-sale securities	0	0
Unrealized losses available-for-sale securities	0	0
Continuous Loss Position, Total
Number of securities	1	1
Fair value available-for-sale securities	29,000	31,000
Unrealized losses available-for-sale securities	$ 2,000	$ 2,000