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Accrued Liabilities | 6 Months Ended
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Jun. 30, 2022
Accrued Liabilities |
Accrued Liabilities | Note 5. Accrued Liabilities ​ The components of accrued liabilities are summarized below (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | June 30, | ​ | December 31, | ​
​ |  | 2022 |  | 2021 |
Accrued compensation and related charges | ​ | $ | 4,083 | ​ | $ | 5,115 | ​
Preferred stock dividends payable | ​ | ​ | 2,901 | ​ | ​ | 2,901 | ​
Accrued income taxes | ​ | ​ | 1,447 | ​ | ​ | 539 | ​
Payable in connection with construction in progress | ​ | ​ | 861 | ​ | ​ | 2,974 | ​
Accrued product warranty | ​ | ​ | 839 | ​ | ​ | 743 | ​
Advances from customers | ​ | ​ | 757 | ​ | ​ | 946 | ​
Other tax payable | ​ | ​ | 576 | ​ | ​ | 392 | ​
Accrued professional services | ​ | ​ | 562 | ​ | ​ | 880 | ​
Current portion of operating lease liabilities | ​ | ​ | 498 | ​ | ​ | 488 | ​
Other personnel-related costs | ​ | ​ | 267 | ​ | ​ | 279 | ​
Accrual for sales returns | ​ | ​ | 27 | ​ | ​ | 48 | ​
Other accrued liabilities | ​ | ​ | 1,763 | ​ | ​ | 1,752 | ​
​ | ​ | $ | 14,581 | ​ | $ | 17,057 | ​
​

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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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