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Commitments and Contingencies	12 Months Ended
Commitments and Contingencies	Sep. 30, 2018
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingencies	20. Commitments and Contingencies Contingent Earn-out Liability The Company established an initial earn-out liability of $7.7 million in connection with its July 2018 acquisition of Quantum. The contingent earn-out payments, if any, which at the Company’s option may be paid in the form of cash or Company stock, will be derived from certain eligible revenue that may be generated by Quantum during the four-year earn-out period. The Company reviews and accesses the value of the contingent earn-out liability on a quarterly basis. The maximum amount of contingent payments is $23.5 million over the four-year earn-out period. Operating Leases The Company leases office space and certain equipment for terms of one year or less. Rent expense was approximately $0.1 million, $0.1 million and $0.2 million during fiscal years 2018, 2017 and 2016, respectively. Legal Proceedings The Company is involved in various pending legal actions in the ordinary course of its business. Management is unable to predict the ultimate outcome of these actions, because of the inherent uncertainty of litigation. However, management believes that the most probable, ultimate resolution of current pending matters will not have a material adverse effect on the Company’s consolidated financial position, results of operations or cash flows.