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Note 1 - Summary of Significant Accounting Policies - Contract Assets and Liabilities (Details) - USD ($)
3 Months Ended 12 Months Ended
Mar. 31, 2023
Dec. 31, 2022
Cost incurred $ 4,338,453 $ 3,860,179
Unbilled project deliveries 506,509 950,105
VAT 327,718 229,006
Other receivables 75,804 45,814
Prepayments (3,445,720) (3,363,039)
Deferred Revenue (65,701) (118,327)
Contract with Customer, Asset (Liability), Net 1,737,063 1,603,738
Contract assets 2,447,668 2,253,295
Contract liabilities (710,604) (649,557)
Contract with Customer, Asset (Liability), Net $ 1,737,063 $ 1,603,738