Note 6 - Investments Schedule of Contractual Maturities (Details) (USD $) In Thousands	Jun. 30, 2011		Dec. 31, 2010
Total Debt Securities [Line Items]
Held-to-maturity securities	$ 7,781		$ 10,773
Held-to-maturity Securities, Fair Value Disclosure	8,282		11,416
Available-for-sale Securities, Debt Securities	149,146		273,799
Debt Securities [Member]
Total Debt Securities [Line Items]
Held-to-maturity securities	7,781
Held-to-maturity Securities, Fair Value Disclosure	8,282
Available-for-sale Debt Securities, Amortized Cost Basis	160,085
Available-for-sale Securities, Debt Securities	149,146
Non Asset Backed Security Investments, Contractual Maturities [Member]
Total Debt Securities [Line Items]
Held-to-maturity Securities, Debt Maturities, within One Year, Net Carrying Amount	1,876	[1]
Held-to-maturity Securities, Debt Maturities, within One Year, Fair Value	1,912	[1]
Available-for-sale Securities, Debt Maturities, within One Year, Amortized Cost Basis	2,197	[1]
Available-for-sale Securities, Debt Maturities, within One Year, Fair Value	2,165	[1]
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Net Carrying Amount	2,528	[1]
Held-to-maturity Securities, Debt Maturities, after One Through Five Years, Fair Value	2,689	[1]
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Amortized Cost Basis	15,788	[1]
Available-for-sale Securities, Debt Maturities, after One Through Five Years, Fair Value	16,282	[1]
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Net Carrying Amount	3,074	[1]
Held-to-maturity Securities, Debt Maturities, after Five Through Ten Years, Fair Value	3,390	[1]
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Amortized Cost Basis	7,236	[1]
Available-for-sale Securities, Debt Maturities, after Five Through Ten Years, Fair Value	7,413	[1]
Held-to-maturity Securities, Debt Maturities, after Ten Years, Net Carrying Amount	303	[1]
Held-to-maturity Securities, Debt Maturities, after Ten Years, Fair Value	291	[1]
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis	127,705	[1]
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value	115,922	[1]
RMBS [Member]
Total Debt Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	3,453	[2]
Available-for-sale Securities, Debt Securities	3,504	[2]
CMBS [Member]
Total Debt Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	2,679	[2]
Available-for-sale Securities, Debt Securities	2,695	[2]
Other ABS [Member]
Total Debt Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	1,027	[2]
Available-for-sale Securities, Debt Securities	$ 1,165	[2]

[1] Actual maturities may differ as a result of calls before scheduled maturity.

[2] RMBS, CMBS and Other ABS are shown separately, as they are not due at a single maturity date.