Note 11 - Debt (Tables)
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6 Months Ended |
Jun. 30, 2026 |
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| Notes Tables |
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| Schedule of Long-Term Debt Instruments [Table Text Block] |
| | | June 30, | | | December 31, | |
| | | 2026 | | | 2025 | |
| Long-term Debt | | | | | | | | |
| Mezzanine term loan to Stream Finance, LLC, a related party, collateralized by substantially all of TotalStone’s assets and subordinated to the Bank term notes. Interest is calculated monthly as the Base Rate divided by an Adjustment Factor of 0.75, not to exceed 15% per annum (see further details below), with a maturity date of September 30, 2028. On March 7, 2025, the Special Preferred Membership Interests were exchanged for loans in an aggregate principal of $1,143,646 and an amendment fee of $695,000 payable on the deferral date of September 30, 2028, as extended on June 17, 2026, which are included in this amount. At June 30, 2026 and December 31, 2025, $676.0 thousand and $524.0 thousand of accrued interest remains unpaid and is included within this amount, respectively. | | $ | 3,889 | | | $ | 3,713 | |
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| Seller’s note with Avelina Masonry, LLC, which required monthly payments of $48.0 thousand. The original maturity date was November 13, 2022 but the loan has not been paid in full and is in default. The loan bears interest at one-month SOFR plus 4.5% plus 3.0% default (11.28% and 11.29% at June 30, 2026 and December 31, 2025, respectively). At June 30, 2026 and December 31, 2025, $344.0 thousand and $283.0 thousand of accrued interest remains unpaid and is included within this amount, respectively. | | | 1,111 | | | | 1,050 | |
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| Seller's note with D22L, Inc., which requires quarterly interest payments commencing December 31, 2025 and quarterly principal payments of $100,000 commencing December 31, 2026. This Subordinated Promissory Note has a maturity date of February 22, 2028 and bears interest of 1.25% plus SOFR (4.89% and 5.59% at June 30, 2026 and December 31, 2025, respectively). At June 30, 2026 and December 31, 2025, $32.0 thousand and $25.0 thousand of accrued interest remains unpaid and is included within this amount, respectively. | | | 1,282 | | | | 1,275 | |
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| Senior Convertible Note with 3i, LP. issued on July 29, 2025 with a principal amount of $3,272,966 and accrued interest of $229,108. This note was issued with an 8.34% original issue discount and bears interest at the rate of 7.0% per annum, with a maturity date of July 29, 2026. At June 30, 2026 and December 31, 2025, $13.0 and $18.0 thousand of accrued interest remains unpaid and is included within this amount, respectively. | | | 264 | | | | 518 | |
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| Seller’s note with Fraser Canyon Holdings Inc., which requires quarterly principal payments of CAD $400,000 commencing July 31, 2026. This Subordinated Promissory Note has a maturity date of March 31, 2027 and bears interest at TD Bank’s prime rate plus 1.00%, stepping up to prime plus 3.00% after November 30, 2026. At June 30, 2026 and December 31, 2025, $15.0 and $5.0 thousand of accrued interest remains unpaid, respectively. | | | 1,142 | | | | 1,167 | |
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| Seller’s note with Fraser Canyon Holdings Inc., which requires quarterly principal payments of CAD $50,000 commencing March 31, 2027. This Subordinated Promissory Note has a maturity date of December 1, 2028 and bears interest at 30-day average SOFR plus 1.25%, stepping up to SOFR plus 2.50% after November 30, 2026 and SOFR plus 3.75% after November 30, 2027. At June 30, 2026 and December 31, 2025, $17.0 and $6.0 thousand of accrued interest remains unpaid, respectively. | | | 1,425 | | | | 1,459 | |
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| Senior Convertible Note with 3i, LP, issued on October 22, 2025 with a principal amount of $3,545,712. This note was issued with an 8.34% original issue discount and bears interest at the rate of 7.0% per annum, with a maturity date of October 22, 2026. At June 30, 2026 and December 31, 2025, $98.0 and $46.0 thousand of accrued interest remains unpaid and is included within this amount, respectively. | | | 1,748 | | | | 3,405 | |
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| In December 2022, TotalStone sold its facility in Navarre, Ohio to a nonaffiliated third party for a purchase price of $3.2 million and concurrently entered into a leaseback transaction. The transaction is treated as a failed sale in accordance with U.S. GAAP. The Company therefore recorded a financing liability related to the sale-leaseback in the amount of the sale price. The obligation matures in January 2048 and requires monthly payments of principal and interest. With the sale leaseback, TotalStone signed a lease agreement with a 25-year lease term. The initial annual lease payment of $259.0 thousand increases 2% per annum. The imputed interest rate is 8.10%. | | | 3,151 | | | | 3,161 | |
| | | | 14,012 | | | | 15,746 | |
| Less: unamortized premiums, discounts, and issuance costs | | | (1,165 | ) | | | (2,695 | ) |
| Total debt, net unamortized premiums, discounts, and issuance costs | | $ | 12,847 | | | $ | 13,051 | |
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| Current portion of principal outstanding | | | 4,818 | | | | 5,675 | |
| Less: current portion of unamortized premiums, discounts, and issuance costs | | | (573 | ) | | | (1,968 | ) |
| Total current portion of long-term debt | | | 4,245 | | | | 3,707 | |
| | | | | | | | | |
| Long-term portion of principal outstanding | | | 9,194 | | | | 10,071 | |
| Less: long-term portion of unamortized premiums, discounts, and issuance costs | | | (592 | ) | | | (727 | ) |
| Total long-term debt, net of current portion | | | 8,602 | | | | 9,344 | |
| Total long-term debt | | $ | 12,847 | | | $ | 13,051 | |
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| Schedule of Debt [Table Text Block] |
| Balance, December 31, 2025 | | $ | 2,493,664 | |
| PIK interest capitalized | | | 25,180 | |
| Balance, June 30, 2026 | | $ | 2,518,844 | |
| Table A | | | Table B | |
| | | Adjusted EBITDA of TotalStone | | | | | | | | Adjusted EBITDA of TotalStone | | | | |
| Level | | (exclusive of Northeast) | | Rate | | | Level | | and Northeast | | Rate | |
| I | | Greater than $2,500,000 | | | 12 | % | | I | | Greater than $4,000,000 | | | 12 | % |
| II | | Less than or equal to $2,500,000, but greater than or equal to $2,000,000 | | | 10 | % | | II | | Less than or equal to $4,000,000, but greater than or equal to $3,500,000 | | | 10 | % |
| III | | Less than $2,000,000 | | | 8 | % | | III | | Less than $3,500,000 | | | 8 | % |
| | | SSN #1 | | | SSN #2 | | | Total | |
| Stated principal | | $ | 250,372 | | | $ | 1,650,388 | | | $ | 1,900,760 | |
| Less: unamortized OID | | | (2,718 | ) | | | (73,779 | ) | | | (76,497 | ) |
| Less: unamortized debt issuance costs | | | (3,186 | ) | | | (66,740 | ) | | | (69,926 | ) |
| Less: unamortized derivative discount | | | (7,975 | ) | | | (327,177 | ) | | | (335,152 | ) |
| Net carrying value | | $ | 236,493 | | | $ | 1,182,692 | | | $ | 1,419,185 | |
| | | June 30, | | | December 31, | |
| | | 2026 | | | 2025 | |
| | | | | | | | | |
| Stated principal | | $ | 1,900,760 | | | $ | 3,859,541 | |
| Less: unamortized original issue discount | | | (76,497 | ) | | | (327,052 | ) |
| Less: unamortized debt issuance costs | | | (69,926 | ) | | | (327,358 | ) |
| Less: unamortized derivative discount | | | (335,152 | ) | | | (1,636,352 | ) |
| Net carrying value | | $ | 1,419,185 | | | $ | 1,568,779 | |
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| Schedule of Debt Conversions [Table Text Block] |
| | | July 2025 Note | | | October 2025 Note | | | Total | |
| Balance, December 31, 2025 | | $ | 500,744 | | | $ | 3,358,797 | | | $ | 3,859,541 | |
| Converted to common stock | | | (250,372 | ) | | | (1,708,409 | ) | | | (1,958,781 | ) |
| Balance, June 30, 2026 | | $ | 250,372 | | | $ | 1,650,388 | | | $ | 1,900,760 | |
| Note | | Conversion Price | | | Principal | | | Accrued Interest | | | Shares Issued | |
| July 2025 Note | | $ | 0.75 | | | $ | 250,372 | | | $ | 17,526 | | | | 357,198 | |
| October 2025 Note | | $ | 0.75 | | | | 1,495,325 | | | | 104,673 | | | | 2,133,335 | |
| October 2025 Note | | $ | 0.57 | | | | 213,084 | | | | 14,916 | | | | 400,000 | |
| Total | | | | | | $ | 1,958,781 | | | $ | 137,115 | | | | 2,890,533 | |
| | | Conversion Price | | | Principal | | | Shares Issuable | |
| July Note | | | 0.75 | | | | 250,372 | | | | 333,829 | |
| October Note — Tranche 1 | | | 0.75 | | | | 90,616 | | | | 120,821 | |
| October Note — Tranche 2 | | | 1.1 | | | | 1,272,856 | | | | 1,157,142 | |
| October Note — Tranche 3 | | | 0.57 | | | | 286,916 | | | | 503,361 | |
| Total | | | | | | $ | 1,900,760 | | | $ | 2,115,154 | |
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| Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block] |
| | | SSN #1 | | | SSN #2 | | | Total | |
| Balance, December 31, 2025 | | $ | 56,605 | | | $ | 645,151 | | | $ | 701,756 | |
| Change in fair value — amendments | | | — | | | | 14,565 | | | | 14,565 | |
| Derecognition to APIC | | | (22,226 | ) | | | (30,696 | ) | | | (52,922 | ) |
| Change in fair value — conversions | | | (58,226 | ) | | | (573,707 | ) | | | (631,933 | ) |
| Change in fair value — remeasurement | | | 23,850 | | | | (48,494 | ) | | | (24,644 | ) |
| Balance, June 30, 2026 | | $ | 3 | | | $ | 6,819 | | | $ | 6,822 | |
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| Schedule of Maturities of Long-Term Debt [Table Text Block] |
| Remainder of 2026 | | $ | 3,860 | |
| 2027 | | | 1,131 | |
| 2028 | | | 5,942 | |
| 2029 | | | 44 | |
| 2030 | | | 54 | |
| Thereafter | | | 2,981 | |
| Total | | $ | 14,012 | |
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