SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES, Marketing and Sales (Q1) (Details) - USD ($) |
3 Months Ended | 12 Months Ended | ||||||
|---|---|---|---|---|---|---|---|---|
Mar. 31, 2024 |
Mar. 31, 2023 |
Dec. 31, 2023 |
Dec. 31, 2022 |
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| Accounting Policies [Abstract] | ||||||||
| Selling and Marketing Expense | $ 1,070,400 | [1] | $ 256,100 | [1] | $ 1,279,600 | $ 625,900 | ||
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