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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Dec. 31, 2014
Jun. 30, 2014
Statement of Financial Position [Abstract]    
Allowance for doubtful accounts receivable $ 1,165us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent $ 883us-gaap_AllowanceForDoubtfulAccountsReceivableCurrent
Property and equipment, accumulated depreciation $ 59,916us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment $ 49,482us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Common stock, par value $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized 120,000,000us-gaap_CommonStockSharesAuthorized 120,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued 56,997,204us-gaap_CommonStockSharesIssued 55,911,513us-gaap_CommonStockSharesIssued
Common stock, shares outstanding 36,662,018us-gaap_CommonStockSharesOutstanding 36,863,802us-gaap_CommonStockSharesOutstanding
Common treasury shares 20,335,186us-gaap_TreasuryStockShares 19,047,711us-gaap_TreasuryStockShares