Note 4 - Accounts Receivable

3 Months Ended

Mar. 31, 2021

Notes to Financial Statements

Accounts and Nontrade Receivable [Text Block]

4. Accounts Receivable

Accounts receivable at

March 31, 2021

and

December 31, 2020,

consist of the following:

	March 31, 2021		December 31, 2020
Billed federal government	$	1,153,203	$	1,425,217
Unbilled receivables		32,760		17,014
Accounts receivable	$	1,185,963	$	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.