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v3.25.1

Summary of significant accounting policies - Additional Information (Details) | 12 Months Ended
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Dec. 31, 2024 USD ($) segment | Dec. 31, 2023 USD ($)
Disaggregation of Revenue [Line Items] |  |
Employee retention credit receivable | $ 0 | $ 46,148
Joint venture, percent owned | 51.00% |
Allowance for doubtful accounts | $ 295,932 | 149,992
Impairment of long-lived assets | 0 | 0
Shipping and handling fees billed to customers | 96,890 | 174,662
Cost of goods sold, shipping and handling | 59,331 | 79,616
Bad debt expense | 146,010 | 902,432
Advertising expense | 74,000 | 80,000
Research and development | $ 962,000 | 840,000
Payment period | 30 days |
Number of operating segments | segment | 3 |
Deferred revenue recognized | $ 662,730 |
Remaining performance obligations | $ 7,867,082 |
Revenue, remaining performance obligation, percentage | 84.00% |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2025-01-01 |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, remaining performance obligation, percentage | 82.00% |
Revenue, remaining performance obligation, expected timing of satisfaction, period | 1 year |
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Start Date [Axis]: 2026-01-01 |  |
Disaggregation of Revenue [Line Items] |  |
Revenue, remaining performance obligation, percentage | 2.00% |
Revenue, remaining performance obligation, expected timing of satisfaction, period | 2 years |
General and Administrative Expense |  |
Disaggregation of Revenue [Line Items] |  |
Shipping and handling expenses | $ 248,229 | $ 427,880

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