Note 6 - Investments Schedule of Contractual Maturities (Details) (USD $) In Thousands, unless otherwise specified	Sep. 30, 2014		Dec. 31, 2013
Held-to-maturity Securities, Amortized Cost
Held-to-maturity securities, amortized cost	$ 50		$ 358
Held-to-maturity Securities, Fair Value
Held-to-maturity Securities, Fair Value Disclosure	50		351
Available-for-sale Securities, Amortized Cost
Available-for-sale Debt Securities, Amortized Cost Basis	448,155		120,385
Available-for-sale Securities, Fair Value
Available-for-sale securities, fair value	450,670		120,553
Debt Securities
Held-to-maturity Securities, Amortized Cost
Held-to-maturity securities, amortized cost	50
Held-to-maturity Securities, Fair Value
Held-to-maturity Securities, Fair Value Disclosure	50
Available-for-sale Securities, Amortized Cost
Available-for-sale Debt Securities, Amortized Cost Basis	448,155
Available-for-sale Securities, Fair Value
Available-for-sale securities, fair value	450,670
Non Asset Backed Security Investments, Contractual Maturities
Held-to-maturity Securities, Amortized Cost
Due in one year or less	50	[1]
Due after one year through five years	0	[1]
Due after five years through ten years	0	[1]
Due after ten years	0	[1]
Held-to-maturity Securities, Fair Value
Due in one year or less	50	[1]
Due after one year through five years	0	[1]
Due after five years through ten years	0	[1]
Due after ten years	0	[1]
Available-for-sale Securities, Amortized Cost
Due in one year or less	77	[1]
Due after one year through five years	76,568	[1]
Due after five years through ten years	64,406	[1]
Due after ten years	72,956	[1]
Available-for-sale Securities, Fair Value
Due in one year or less	77	[1]
Due after one year through five years	76,680	[1]
Due after five years through ten years	65,503	[1]
Due after ten years	74,712	[1]
RMBS
Held-to-maturity Securities, Amortized Cost
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount	0	[2]
Held-to-maturity Securities, Fair Value
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value	0	[2]
Available-for-sale Securities, Amortized Cost
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	76,139	[2]
Available-for-sale Securities, Fair Value
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	77,431	[2]
CMBS
Held-to-maturity Securities, Amortized Cost
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount	0	[2]
Held-to-maturity Securities, Fair Value
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value	0	[2]
Available-for-sale Securities, Amortized Cost
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	31,617	[2]
Available-for-sale Securities, Fair Value
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	31,546	[2]
Other ABS
Held-to-maturity Securities, Amortized Cost
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Net Carrying Amount	0	[2]
Held-to-maturity Securities, Fair Value
Held-to-maturity Securities, Debt Maturities, without Single Maturity Date, Fair Value	0	[2]
Available-for-sale Securities, Amortized Cost
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis	126,392	[2]
Available-for-sale Securities, Fair Value
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value	$ 124,721	[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.