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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Changes In The Allowance For Credit Losses (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 27, 2021
Jun. 28, 2020
Jun. 27, 2021
Jun. 28, 2020
Accounts Receivable, Allowance for Credit Loss [Roll Forward]        
Beginning balance $ 492,087 $ 518,481 $ 492,087 $ 468,233
EdgeRock Technology Holdings, Inc. (“EdgeRock”) acquisition 0 0 0 47,498
Provision for credit losses, net 198,524 68,251 233,282 99,909
Amounts written off, net (169,610) (119,532) (204,368) (148,440)
Ending balance $ 521,001 $ 467,200 $ 521,001 $ 467,200