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BUSINESS SEGMENT (Tables) | 6 Months Ended
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Jun. 30, 2021
BUSINESS SEGMENT |
Schedule of company's sales and long-lived assets by geography | Revenues by geography are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​ | Three Months Ended | ​ | Six Months Ended | ​ | Six Months Ended | ​
​ |  | June 30, 2021 |  | June 30, 2020 |  | June 30, 2021 |  | June 30, 2020 | ​
U.S. sales (excluding U.S. government) | ​ | $ | 12,721,896 | ​ | $ | 9,409,795 | ​ | $ | 23,683,087 | ​ | $ | 17,746,592 | ​
Sales to U.S. government | ​ | ​ | 27,357,840 | ​ | ​ | — | ​ | ​ | 65,140,200 | ​ | ​ | — | ​
North and South America sales (excluding U.S.) | ​ |  | 1,512,388 | ​ |  | 1,943,890 | ​ |  | 2,459,616 | ​ |  | 4,690,290 | ​
Other international sales | ​ |  | 904,820 | ​ |  | 220,160 | ​ |  | 1,287,766 | ​ |  | 339,180 | ​
Total sales | ​ | $ | 42,496,944 | ​ | $ | 11,573,845 | ​ | $ | 92,570,669 | ​ | $ | 22,776,062 | ​
​ Long-lived assets by geography are as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | June 30, 2021 |  | December 31, 2020 | ​
Long-lived assets | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. | ​ | $ | 66,815,307 | ​ | $ | 30,751,259 | ​
International | ​ | ​ | 1,722,724 | ​ | ​ | 65,245 | ​
Total | ​ | $ | 68,538,031 | ​ | $ | 30,816,504 | ​

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- Definition Tabular disclosure of information concerning material long-lived assets (excluding financial instruments, customer relationships with financial institutions, mortgage and other servicing rights, deferred policy acquisition costs, and deferred taxes assets) located in identified geographic areas and/or the amount of revenue from external customers attributed to that country from which revenue is material. An entity may also provide subtotals of geographic information about groups of countries. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9038-108599 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 + Details
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