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Debt (Seller Notes) (Details) - Seller Notes Payable [Member] - FileBound [Member] - USD ($)
May 31, 2016
May 31, 2015
May 31, 2013
Business Acquisition [Line Items]      
Note face amount     $ 3,500,000.0
Stated interest rate (as percent)     5.00%
Notes paid $ 500,000 $ 3,000,000