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Commitments and Contingencies	6 Months Ended
Commitments and Contingencies	Sep. 30, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Litigation and Other Contingencies As a provider of traffic engineering services, hardware products, software and other various solutions for the traffic industry, the Company is, and may in the future from time to time, be involved in litigation relating to claims arising out of its operations in the normal course of business. While the Company cannot accurately predict the outcome of any such litigation, the Company is not a party to any legal proceeding, the outcome of which, in management’s opinion, individually or in the aggregate, would have a material effect on the Company’s unaudited condensed consolidated results of operations, financial position or cash flows.