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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables) | 12 Months Ended
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Dec. 31, 2023
Summary of Percentages of Deferred Revenue by Year | ​
​ | ​ | ​ | ​
​ |  | Revenue |
Year: | ​ | Recognition |
2024 |  | 85 | %
2025 |  | 13 | %
2026 |  | 2 | %
2027 |  | — | %
2028 |  | — | %
Total |  | 100 | %
Summary of Revenue Generated in Geographic Regions for Years Indicated | The following geographic data includes revenue generated from the Company’s third-party distributors. The Company’s revenue was generated in the following geographic regions and by product line for the periods indicated (in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Revenues by Geography |
​ | ​ | Year ended December 31, |
​ | ​ | 2023 | ​ | 2022 |
​ | ​ | ​ | ​ | ​ | % of | ​ | ​ | ​ | ​ | % of |
​ | ​ | Amount | ​ | Revenues | ​ | Amount | ​ | Revenues |
​ | ​ | (in thousands, except percentages) | ​
U.S. |  | $ | 69,336 |  | 97 | % | $ | 63,406 |  | 97 | %
International | ​ |  | 2,012 |  | 3 | % |  | 1,800 |  | 3 | %
Total revenues | ​ | $ | 71,348 |  | 100 | % | $ | 65,206 |  | 100 | %
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Revenues by Geography |
​ | ​ | Year ended December 31, |
​ | ​ | 2022 | ​ | 2021 |
​ | ​ | ​ | ​ | ​ | % of | ​ | ​ | ​ | ​ | % of |
​ |  | Amount |  | Revenues |  | Amount |  | Revenues |
​ | ​ | (in thousands, except percentages) | ​
United States | ​ | $ | 63,406 |  | 97 | % | $ | 53,447 |  | 97 | %
International | ​ |  | 1,800 |  | 3 | % |  | 1,865 |  | 3 | %
Total revenues | ​ | $ | 65,206 |  | 100 | % | $ | 55,312 |  | 100 | %
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | U.S. Revenues by Product Category |
​ | ​ | Year ended December 31, |
​ | ​ | 2022 | ​ | 2021 |
​ |  | ​ | ​ |  | % of |  | ​ | ​ |  | % of |
​ | ​ | Amount | ​ | Revenues | ​ | Amount | ​ | Revenues |
​ |  | (in thousands, except percentages) | ​
NeuroStar Advanced Therapy System | ​ | $ | 16,575 |  | 26 | % | $ | 9,760 |  | 18 | %
Treatment sessions | ​ |  | 45,077 |  | 71 | % |  | 41,933 |  | 78 | %
Other | ​ |  | 1,754 |  | 3 | % |  | 1,754 |  | 4 | %
Total U.S. revenues | ​ | $ | 63,406 |  | 100 | % | $ | 53,447 |  | 100 | %
U.S. |
Summary of Revenue Generated in Product Category for Years Indicated | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | U.S. Revenues by Product Category |
​ | ​ | Year ended December 31, |
​ | ​ | 2023 | ​ | 2022 |
​ | ​ | ​ | ​ | ​ | % of | ​ | ​ | ​ | % of |
​ |  | Amount |  | Revenues |  | Amount |  | Revenues |
​ |  | (in thousands, except percentages) | ​
NeuroStar Advanced Therapy System | ​ | $ | 16,460 | ​ | 24 | % | $ | 16,575 | ​ | 26 | %
Treatment sessions | ​ |  | 50,896 |  | 73 | % |  | 45,077 |  | 71 | %
Other | ​ |  | 1,980 |  | 3 | % |  | 1,754 |  | 3 | %
Total U.S. revenues | ​ | $ | 69,336 |  | 100 | % | $ | 63,406 |  | 100 | %
​
International |
Summary of Revenue Generated in Product Category for Years Indicated | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | International Revenues by Product Category |
​ | ​ | Year ended December 31, |
​ | ​ | 2023 | ​ | 2022 |
​ | ​ | ​ | ​ | ​ | % of | ​ | ​ | ​ | ​ | % of |
​ |  | Amount |  | Revenues |  | Amount |  | Revenues |
​ |  | (in thousands, except percentages) | ​
NeuroStar Advanced Therapy System | ​ | $ | 629 |  | 31 | % | $ | 811 |  | 45 | %
Treatment sessions | ​ |  | 754 |  | 38 | % |  | 354 |  | 20 | %
Other | ​ |  | 629 |  | 31 | % |  | 635 |  | 35 | %
Total International revenues | ​ | $ | 2,012 |  | 100 | % | $ | 1,800 |  | 100 | %
​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | International Revenues by Product Category |
​ | ​ | Year ended December 31, |
​ | ​ | 2022 | ​ | 2021 |
​ | ​ | ​ | ​ | ​ | % of | ​ | ​ | ​ | ​ | % of |
​ |  | Amount |  | Revenues |  | Amount |  | Revenues |
​ | ​ | (in thousands, except percentages) |
NeuroStar Advanced Therapy System | ​ | $ | 811 |  | 45 | % | $ | 1,108 |  | 59 | %
Treatment sessions | ​ |  | 354 |  | 20 | % |  | 264 |  | 14 | %
Other | ​ |  | 635 |  | 35 | % |  | 493 |  | 27 | %
Total International revenues | ​ | $ | 1,800 |  | 100 | % | $ | 1,865 |  | 100 | %

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