Note 6 - Investments Schedule of Unrealized Losses (Details) (USD $)	Sep. 30, 2012 security	Dec. 31, 2011 security
Continuous Loss Position Less Than Twelve Months
Number of Securities	1	10
Fair value HTM And AFS state and municipal obligations	$ 35,000	$ 12,620,000
Unrealized losses AFS And HTM state and municipal obligations	1,000	984,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	11	28
Fair value HTM And AFS state and municipal obligations	11,694,000	82,082,000
Unrealized Losses AFS And HTM state and municipal obligations	672,000	5,832,000
Continuous Loss Position, Total
Number of securities	12	38
Fair Value HTM And AFS state and municipal obligations	11,729,000	94,702,000
Unrealized losses AFS and HTM state and municipal obligations	673,000	6,816,000
State and municipal obligations
Continuous Loss Position Less Than Twelve Months
Number of Securities	0	1
Fair value HTM And AFS state and municipal obligations	0	525,000
Unrealized losses AFS And HTM state and municipal obligations	0	17,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	4	9
Fair value HTM And AFS state and municipal obligations	6,202,000	72,653,000
Unrealized Losses AFS And HTM state and municipal obligations	365,000	4,866,000
Continuous Loss Position, Total
Number of securities	4	10
Fair Value HTM And AFS state and municipal obligations	6,202,000	73,178,000
Unrealized losses AFS and HTM state and municipal obligations	365,000	4,883,000
Corporate bonds and notes
Continuous Loss Position Less Than Twelve Months
Number of Securities	0	6
Fair value available-for-sale securities	0	2,457,000
Unrealized losses available-for-sale securities	0	97,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	7	18
Fair value available-for-sale securities	5,492,000	8,902,000
Unrealized losses available-for-sale securities	307,000	950,000
Continuous Loss Position, Total
Number of securities	7	24
Fair value available-for-sale securities	5,492,000	11,359,000
Unrealized losses available-for-sale securities	307,000	1,047,000
RMBS
Continuous Loss Position Less Than Twelve Months
Number of Securities	1	2
Fair value available-for-sale securities	35,000	354,000
Unrealized losses available-for-sale securities	1,000	1,000
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	2
Fair value available-for-sale securities	35,000	354,000
Unrealized losses available-for-sale securities	1,000	1,000
CMBS
Continuous Loss Position Less Than Twelve Months
Number of Securities		0
Fair value available-for-sale securities		0
Unrealized losses available-for-sale securities		0
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities		1
Fair value available-for-sale securities		527,000
Unrealized losses available-for-sale securities		16,000
Continuous Loss Position, Total
Number of securities		1
Fair value available-for-sale securities		527,000
Unrealized losses available-for-sale securities		16,000
Equity securities
Continuous Loss Position Less Than Twelve Months
Number of Securities		1
Fair value available-for-sale securities		9,284,000
Unrealized losses available-for-sale securities		869,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities		0
Fair value available-for-sale securities		0
Unrealized losses available-for-sale securities		0
Continuous Loss Position, Total
Number of securities		1
Fair value available-for-sale securities		9,284,000
Unrealized losses available-for-sale securities		$ 869,000