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Accounts receivable consists of trade receivables as follows: (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Billed receivables	$ 5,177,601	$ 5,226,468
Less: allowance for doubtful accounts	(209,887)	(263,562)
Total accounts receivable, net	$ 4,967,714	$ 4,962,906	$ 7,309,323	$ 6,958,417	$ 6,107,968	$ 7,029,602

X

- Definition

Amount, before allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
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X

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

+ References

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- Definition

Amount of allowance for credit loss on accounts receivable, classified as current.

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