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Note 4 - Debt and Equity Securities (Details) - Credit Loss Component Recognized in Earnings on Debt Securities for Which a Portion of OTTI Was Recognized in AOCI - USD ($)
$ in Thousands
Jun. 30, 2014
Mar. 31, 2014
Credit Loss Component Recognized in Earnings on Debt Securities for Which a Portion of OTTI Was Recognized in AOCI [Abstract]    
Balance $ 3,738 $ 3,738
Balance $ 3,738 $ 3,738