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Note 1 - Summary of Significant Accounting Policies - Contract Assets and Liabilities (Details) - USD ($)
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Cost incurred $ 3,860,179 $ 3,381,994
Unbilled project deliveries 950,105 454,158
VAT 229,006 542,255
Other receivables 45,814 60,158
Prepayments (3,363,039) (2,947,736)
Deferred Revenue (118,327) (499,146)
Contract with Customer, Asset (Liability), Net 1,603,738 991,682
Contract assets 2,253,295 1,906,510
Contract liabilities (649,557) (914,828)
Contract with Customer, Asset (Liability), Net $ 1,603,738 $ 991,682