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OTHER ACCRUED LIABILITIES | 9 Months Ended
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Sep. 30, 2021
OTHER ACCRUED LIABILITIES |
OTHER ACCRUED LIABILITIES | 6. OTHER ACCRUED LIABILITIES Other accrued liabilities consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | September 30, 2021 |  | December 31, 2020
Prepayments from customers | ​ | $ | 2,609,684 | ​ | $ | 1,686,868
Accrued property taxes | ​ | ​ | 338,540 | ​ | ​ | —
Accrued professional fees | ​ | ​ | 228,204 | ​ | ​ | 331,204
Current portion – preferred stock repurchase | ​ |  | 1,084,795 | ​ |  | 1,092,282
Other accrued expenses | ​ |  | 161,642 | ​ |  | 288,550
Total | ​ | $ | 4,422,865 | ​ | $ | 3,398,904
​

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- Definition The entire disclosure for accounts payable and accrued liabilities at the end of the reporting period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(a),20,24) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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