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Subsequent Events (Notes)	9 Months Ended
Subsequent Events (Notes)	Jun. 30, 2018
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On July 31, 2018, CSPi announced the completion of its sale of all of the stock of Modcomp GmbH, to Reply AG, pursuant to the terms of a Share Purchase and Assignment Agreement dated June 27, 2018. CSPI GmbH, through itself and its wholly owned subsidiaries, provided managed security services to customers primarily in Germany. Upon the closing of the Share Purchase Agreement, Reply AG paid to CSPI total cash at closing of approximately €12,343,000, which consists of the original purchase price of €10,000,000 plus an adjustment at closing for Net Cash (as defined in the Share Purchase Agreement) of approximately €2,343,000.