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Cash and Cash Equivalents (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2015
Jun. 30, 2014
Mar. 31, 2014
Jun. 30, 2013
Cash and Cash Equivalents        
Cash and cash equivalents $ 111,827us-gaap_CashAndCashEquivalentsAtCarryingValue $ 142,261us-gaap_CashAndCashEquivalentsAtCarryingValue $ 164,076us-gaap_CashAndCashEquivalentsAtCarryingValue $ 194,960us-gaap_CashAndCashEquivalentsAtCarryingValue