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Note 6 - Investments Schedule of Contractual Maturities (Details) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2014
Dec. 31, 2013
Held-to-maturity Securities, Amortized Cost    
Held-to-maturity Securities $ 50 $ 358
Held-to-maturity Securities, Fair Value    
Total held to maturity fair value 50 351
Available-for-sale Securities, Amortized Cost    
Amortized cost 328,051 120,385
Available-for-sale Securities, Fair Value    
Fair value 332,736 120,553
Debt Securities
    
Held-to-maturity Securities, Amortized Cost    
Held-to-maturity Securities 50  
Held-to-maturity Securities, Fair Value    
Total held to maturity fair value 50  
Available-for-sale Securities, Amortized Cost    
Amortized cost 328,051  
Available-for-sale Securities, Fair Value    
Fair value 332,736  
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 3,582 [1]  
Due after one year through five years 77,618 [1]  
Due after five years through ten years 58,754 [1]  
Due after ten years 91,432 [1]  
Available-for-sale Securities, Fair Value    
Due in one year or less 3,036 [1]  
Due after one year through five years 78,054 [1]  
Due after five years through ten years 60,404 [1]  
Due after ten years 95,182 [1]  
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 96,665 [2]  
Available-for-sale Securities, Fair Value    
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value $ 96,060 [2]  
[1] Actual maturities may differ as a result of calls before scheduled maturity.
[2] Other ABS are shown separately, as they are not due at a single maturity date.