Note 7 - Investments Schedule of Unrealized Losses (Details) (USD $)	Dec. 31, 2011	Dec. 31, 2010
Continuous Loss Position Less Than Twelve Months
Number of Securities	10	45
Fair value HTM And AFS state and municipal obligations	$ 12,620,000	$ 24,199,000
Unrealized losses AFS And HTM state and municipal obligations	984,000	1,085,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	28	28
Fair value HTM And AFS state and municipal obligations	82,082,000	189,798,000
Unrealized Losses AFS And HTM state and municipal obligations	5,832,000	70,203,000
Continuous Loss Position, Total
Number of securities	38	73
Fair Value HTM And AFS state and municipal obligations	94,702,000	213,997,000
Unrealized losses AFS and HTM state and municipal obligations	6,816,000	71,288,000
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Credit Losses on Debt Securities Held	0
State and municipal obligations
Continuous Loss Position Less Than Twelve Months
Number of Securities	1	6
Fair value HTM And AFS state and municipal obligations	525,000	3,507,000
Unrealized losses AFS And HTM state and municipal obligations	17,000	110,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	9	26
Fair value HTM And AFS state and municipal obligations	72,653,000	189,194,000
Unrealized Losses AFS And HTM state and municipal obligations	4,866,000	70,179,000
Continuous Loss Position, Total
Number of securities	10	32
Fair Value HTM And AFS state and municipal obligations	73,178,000	192,701,000
Unrealized losses AFS and HTM state and municipal obligations	4,883,000	70,289,000
Corporate bonds and notes
Continuous Loss Position Less Than Twelve Months
Number of Securities	6	31
Fair value available-for-sale securities	2,457,000	16,364,000
Unrealized losses available-for-sale securities	97,000	852,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	18	2
Fair value available-for-sale securities	8,902,000	604,000
Unrealized losses available-for-sale securities	950,000	24,000
Continuous Loss Position, Total
Number of securities	24	33
Fair value available-for-sale securities	11,359,000	16,968,000
Unrealized losses available-for-sale securities	1,047,000	876,000
RMBS
Continuous Loss Position Less Than Twelve Months
Number of Securities	2	1
Fair value available-for-sale securities	354,000	1,436,000
Unrealized losses available-for-sale securities	1,000	14,000
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	2	1
Fair value available-for-sale securities	354,000	1,436,000
Unrealized losses available-for-sale securities	1,000	14,000
CMBS
Continuous Loss Position Less Than Twelve Months
Number of Securities	0	3
Fair value available-for-sale securities	0	1,885,000
Unrealized losses available-for-sale securities	0	39,000
Continuous Unrealized Loss Position, Twelve Months Or Greater
Number of securities	1	0
Fair value available-for-sale securities	527,000	0
Unrealized losses available-for-sale securities	16,000	0
Continuous Loss Position, Total
Number of securities	1	3
Fair value available-for-sale securities	527,000	1,885,000
Unrealized losses available-for-sale securities	16,000	39,000
Other ABS
Continuous Loss Position Less Than Twelve Months
Number of Securities		2
Fair value available-for-sale securities		802,000
Unrealized losses available-for-sale securities		5,000
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		2
Fair value available-for-sale securities		802,000
Unrealized losses available-for-sale securities		5,000
Equity securities
Continuous Loss Position Less Than Twelve Months
Number of Securities	1	2
Fair value available-for-sale securities	9,284,000	205,000
Unrealized losses available-for-sale securities	869,000	65,000
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	9,284,000	205,000
Unrealized losses available-for-sale securities	$ 869,000	$ 65,000