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Significant Accounting Policies - Additional Information (Details) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2024 USD ($) Segment | Mar. 31, 2023 USD ($) | Dec. 31, 2023 USD ($)
Accounting Policies [Line Items] |  |  |
Accounts receivable,Allowance for doubtful accounts | $ 2,542,000 |  | $ 1,361,000
Capitalized software costs | (922,000) | $ (1,142,000) |
Write-offs of accounts receivable | $ 0 | 0 |
Concentration risk percentage | 10.00% |  | 10.00%
Buy back provision | $ 631,000 |  | $ 851,000
Goodwill impairment | 0 |  | 0
Warranty allowance | 1,570,000 |  | 2,215,000
Product warranty accrual related to remaining cost of replacement for identified battery deficiency | 864,000 |  | 864,000
Product warranty accrual related to remaining cost of perform the firmware and hardware updates | $ 30,000 |  | 410,000
Number of days due for payments of credit card, check or automated clearing house | 30 days |  |
Warranty period on hardware devices | 1 year |  |
Estimated average in service life of hub device | 4 years |  |
Capitalized research and development costs | $ 8,027,000 |  | 7,064,000
Capitalized research and development net | 6,789,000 |  | 6,163,000
Advertising expenses | $ 83,000 | 152,000 |
Number of operating segment | Segment | 1 |  |
Number of reportable segment | Segment | 1 |  |
Assets | $ 485,453,000 |  | 509,756,000
Compensation expense | 3,281,000 | 3,680,000 |
RSUs |  |  |
Accounting Policies [Line Items] |  |  |
Compensation expense | $ 0 |  |
ASU No. 2016-13 |  |  |
Accounting Policies [Line Items] |  |  |
Change in Accounting Principle, Accounting Standards Update, Adopted [true false] | true |  |
Change in Accounting Principle, Accounting Standards Update, Adoption Date | Jan. 01, 2023 |  |
Change in Accounting Principle, Accounting Standards Update, Immaterial Effect [true false] | true |  |
UNITED STATES |  |  |
Accounting Policies [Line Items] |  |  |
Assets | $ 7,994,000 |  | $ 8,280,000
Minimum |  |  |
Accounting Policies [Line Items] |  |  |
Contractual terms for Hosted Services Revenue | 1 month |  |
Maximum |  |  |
Accounting Policies [Line Items] |  |  |
Contractual terms for Hosted Services Revenue | 8 years |  |
General and Administrative Expenses |  |  |
Accounting Policies [Line Items] |  |  |
Provision for doubtful accounts | $ 1,181,000 | (89,000) |
Research and Development Expenses |  |  |
Accounting Policies [Line Items] |  |  |
Capitalized software costs amortization | 350,000 | 82,000 |
Compensation expense | 961,000 | 978,000 |
Cost of Sales |  |  |
Accounting Policies [Line Items] |  |  |
Warranty expense | $ (93,000) | $ 540,000 |

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