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Revenue Recognition - Schedule of Revenues in Excess of Billings and Deferred Revenue (Details) - USD ($)
Jun. 30, 2021
Jun. 30, 2020
Revenue Recognition and Deferred Revenue [Abstract]    
Revenues in excess of billings $ 15,637,734 $ 18,506,733
Unearned revenue $ 4,556,626 $ 4,095,472