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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details) | 1 Months Ended | 12 Months Ended
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Oct. 31, 2017 | Dec. 31, 2023 USD ($) customer | Dec. 31, 2022 USD ($) customer | Dec. 31, 2021 USD ($) customer | Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Cash held on deposits at financial institution in excess of FDIC Insured limit |  | $ 250,000 |  |  |
Impairment losses |  | 1,900,000 |  |  |
Inventory impairment |  | 1,905,000 |  |  |
Impairment of long-lived assets |  | $ 0 | $ 0 | $ 0 |
Revenue, performance obligation, description of warranty |  | The Company provides a one-year warranty on all new System sales which were determined to be assurance-type warranties and thus not considered a separate performance obligation. The Company accrues the cost of providing these warranties. |  |  |
Right of return or refund |  | $ 0 |  |  |
Term of distribution agreement | 7 years 6 months |  |  |  |
Distribution agreement, renewal period | 2 years |  |  |  | 2 years
Revenue recognized |  | $ 2,000,000.0 | $ 2,500,000 |  |
Number of customer accounted for more than 10% of revenues | customer |  | 1 | 1 | 1 |
Accounts receivable |  | $ 15,782,000 | $ 13,591,000 |  |
Dividend yield percentage |  | 15 | 17 | 20 |
Customer 1 |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Notes Receivables |  | $ 5,200,000 | $ 0 |  |
Credit concentration risk | Customer 1 |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Accounts receivable |  | 1,900,000 | 5,200,000 |  |
Sales and Marketing |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Impairment losses |  | 0 | 0 | $ 100,000 |
Impairment charges |  | $ 0 | $ 0 | $ 100,000 |
Computers and Software |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Property and equipment estimated useful life |  | 3 years |  |  |
Laboratory, Auto and Office Equipment |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Property and equipment estimated useful life |  | 5 years |  |  |
Devices in Rental Agreement Program |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Property and equipment estimated useful life |  | 6 years |  |  |
Leasehold Improvements |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Property and equipment estimated useful life |  | 5 years |  |  |
Capitalized Software |  |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |  |
Property and equipment estimated useful life |  | 2 years |  |  |

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