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Fair Value of Financial Instruments Fair Value of Financial Instruments Text Tags (Details) - USD ($)
$ in Thousands
Mar. 31, 2016
Mar. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Available-for-sale Securities $ 56,180 $ 100,204 [1],[2]
Restatement Adjustment [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Available-for-sale Securities   $ (981)
[1] (1) March 31, 2015 and 2014 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.
[2] (1) March 31, 2015 balances have been restated from previously reported results to correct for material and certain other errors from prior periods. Refer to Notes 1 and 18 for further detail.