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Equity Incentive Plans (Schedule of Stock-option Expense to be Recognized in the Future) (Details) $ in Thousands | Dec. 31, 2015 USD ($)
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Share-based Compensation [Abstract] |
Stock option expense to be recognized in 2015 | $ 904
Stock option expense to be recognized in 2016 | 680
Stock option expense to be recognized in 2017 | 293
Stock option expense to be recognized in 2018 | 0
Total Compensation Cost To Be Recognized, Stock Options | $ 1,877

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- Definition Share-based Compensation, Stock Option Expense, Recognized in Year Three + References No definition available. + Details
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- Definition Share-based Compensation, Stock Option Expense, Recognized in Year Two + References No definition available. + Details
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- Definition Share-based Compensation, Stock Option Expense, To Be Recognized in One Year + References No definition available. + Details
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- Definition epr_ShareBasedCompensationStockOptionExpenseRecognizedInYearFour + References No definition available. + Details
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- Definition Unrecognized cost of unvested options awarded to employees as compensation. + References No definition available. + Details
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- References No definition available. + Details
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