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Other Comprehensive Income (Loss) Reclassifications from Accumulated Other Comprehensive Income (Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Statement of Comprehensive Income [Abstract]    
Reclassification adjustment for sales of available-for-sale securities, net of tax $ 0 $ 4
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax $ 0 $ 4