| Dec 31,
2014 | Dec 31,
2015 | Dec 31,
2016 | Dec 31,
2017 | Dec 31,
2018 | Dec 31,
2019 | Dec 31,
2020 | Dec 31,
2021 | Dec 31,
2022 |
|---|
| Net loss | 7 | 12 | 21 | 21 | 52 | 21 | -6 | -6 | -84 |
|---|
| Depreciation and amortization | 12 | 14 | 14 | 12 | 11 | 14 | 19 | 22 | 24 |
|---|
| Loss on rental assets and other fixed assets | - | - | - | - | - | -1 | -1 | -2 | -3 |
|---|
| Gain on sale of former rental assets | -2 | - | - | - | - | - | - | - | 0 |
|---|
| Provision For Sales Returns And Doubtful Accounts | - | - | 11 | 14 | 18 | 17 | 10 | 11 | 13 |
|---|
| Provision for rental revenue adjustments | 8 | 9 | 11 | 5 | 3 | 2 | 3 | - | - |
|---|
| Inventory Write-down | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 2 |
|---|
| Stock-based compensation expense | 1 | 4 | 7 | 10 | 13 | 9 | 8 | 11 | 12 |
|---|
| Deferred income taxes | 2 | 5 | 1 | 8 | -12 | 3 | -0 | 14 | - |
|---|
| Change in fair value of earnout liability | - | - | - | - | - | 1 | 1 | -12 | -15 |
|---|
| Loss on disposal of intangible asset | - | - | - | - | - | - | - | - | -52 |
|---|
| Accounts receivable | 22 | 17 | 33 | 18 | 26 | 17 | 8 | 6 | 51 |
|---|
| Inventories | 4 | 3 | 7 | 6 | 10 | 10 | -8 | 11 | 6 |
|---|
| Income tax receivable | 0 | 2 | -2 | 1 | 1 | 0 | -1 | -1 | 0 |
|---|
| Prepaid expenses and other current assets | 1 | -0 | 1 | 1 | 5 | 3 | -0 | 8 | -7 |
|---|
| Operating lease right-of-use asset | - | - | - | - | - | 6 | 3 | 16 | -3 |
|---|
| Other noncurrent assets | - | - | - | - | 2 | 2 | -2 | -0 | -0 |
|---|
| Accounts payable and accrued expenses | 4 | 2 | -0 | 7 | 6 | 3 | -6 | -6 | 7 |
|---|
| Accrued payroll | 1 | 1 | 1 | 1 | 5 | -5 | 1 | 10 | -6 |
|---|
| Warranty reserve | - | - | - | - | 3 | 3 | 2 | -1 | 6 |
|---|
| Deferred revenue | - | - | - | - | 3 | 3 | -0 | 2 | -1 |
|---|
| Income tax payable | - | 0 | -0 | 0 | 0 | 0 | 0 | -1 | -0 |
|---|
| Operating lease liability | - | - | - | - | - | 7 | 3 | 17 | -3 |
|---|
| Other noncurrent liabilities | -0 | -0 | -0 | 0 | 0 | -1 | - | - | - |
|---|
| Net cash provided by (used in) operating activities | - | - | - | - | 60 | 41 | 37 | 24 | -38 |
|---|
| Purchases of marketable securities | - | - | - | - | 76 | 59 | 23 | 10 | - |
|---|
| Maturities of marketable securities | - | - | - | - | 63 | 91 | 15 | 19 | 10 |
|---|
| Investment in intangible assets | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | - |
|---|
| Investment in property and equipment | 2 | 2 | 2 | 3 | 8 | 3 | 4 | 5 | 3 |
|---|
| Production and purchase of rental equipment | - | 10 | 6 | 4 | 5 | 3 | 13 | 18 | 18 |
|---|
| Proceeds from sale of former assets | - | - | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
|---|
| Payment for acquisition, net of cash acquired | - | - | - | 4 | - | 70 | - | - | - |
|---|
| Net cash used in investing activities | - | - | - | - | -25 | -44 | -26 | -15 | -11 |
|---|
| Proceeds from stock options exercised | 1 | 2 | 7 | 13 | 17 | 3 | 0 | 14 | 0 |
|---|
| Proceeds from Stock Plans | 0 | 1 | 1 | 1 | 2 | 3 | 2 | 2 | 2 |
|---|
| Payment of employment taxes related to release of restricted stock | - | - | - | - | 1 | 1 | 0 | 1 | 1 |
|---|
| Net cash provided by financing activities | - | - | - | - | 18 | 5 | 2 | 15 | 0 |
|---|
| Effect of exchange rates on cash | - | - | - | - | 0 | -0 | 0 | -0 | -0 |
|---|
| Net increase (decrease) in cash and cash equivalents | - | - | - | - | - | 1 | 14 | 24 | -49 |
|---|
| Income Taxes Paid, Net | - | 0 | -0 | 1 | 2 | 0 | -1 | 2 | 0 |
|---|
| Accrued value of earnout related to acquisition | - | - | - | - | - | 26 | - | - | - |
|---|
| Capital Expenditures Incurred but Not yet Paid | - | - | - | 0 | 0 | 0 | 0 | 0 | 0 |
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