Note 4 - Accounts Receivable (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

Schedule of Accounts, Notes, Loans and Financing Receivable [Table Text Block]

	June 30, 2021		December 31, 2020
Billed federal government	$	1,947,648	$	1,425,217
Billed commercial and other		64,035		-
Total billed		2,011,683		1,425,217
Unbilled receivables		85,838		17,014
Accounts receivable	$	2,097,521	$	1,442,231