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Related Party Transactions (Narrative) (Details) - USD ($) | 6 Months Ended
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Jun. 30, 2025 | Jun. 30, 2024
Senior Officer of NLEX [Member] | Lease Amounts [Member] | Edwardsville, IL [Member] | Selling, General and Administrative Expenses [Member] |  |
Related Party Transaction [Line Items] |  |
Payment to related party | $ 58,000 | $ 57,000

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