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Note 4 - Receivables | 12 Months Ended
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Dec. 31, 2021
Notes to Financial Statements |
Accounts and Nontrade Receivable [Text Block] |
Note 4. | Receivables
Accounts receivable as of December 31, 2021 and 2020, consist of the following:
|  | December 31, |
|  | 2021 |  |  | 2020 |
Billed federal government |  | $ | 1,594,473 |  |  | $ | 1,425,217 |
Unbilled receivables |  |  | 70,389 |  |  |  | 17,014 |
Accounts receivable |  | $ | 1,664,862 |  |  | $ | 1,442,231 |
Billed receivables from the federal government include amounts due from both prime contracts and subcontracts where the federal government is the end customer. Unbilled receivables include short-term contract assets where billing cycles differ from calendar months, or a monthly fixed billing amount does not reflect the revenue earned in a given month. The accounts receivable balance as of December 31, 2019, was $668,712.

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