| Dec 31, 2015 | Dec 31, 2016 | Dec 31, 2017 | Dec 31, 2018 | Dec 31, 2019 | Dec 31, 2020 | Dec 31, 2021 | Dec 31, 2022 | Dec 31, 2023 | Dec 31, 2024 |
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| Net loss | -58 | -74 | -107 | -97 | -99 | -485 | -429 | -13,660 | -220 | -1,001 |
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| Goodwill impairment | - | - | - | - | - | - | - | 13,403 | - | 790 |
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| Amortization of intangible assets | - | - | - | - | 36 | 65 | 195 | 245 | 326 | 363 |
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| Depreciation, Nonproduction | - | - | - | - | - | - | - | - | 11 | 10 |
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| Amortization of right-of-use assets | - | - | - | - | - | 7 | - | - | 12 | 9 |
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| Provision for allowances for doubtful accounts | 2 | 2 | 2 | 2 | 3 | 5 | 17 | 15 | 5 | 4 |
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| Stock-based compensation | 3 | 8 | 31 | 44 | 67 | 476 | 303 | 218 | 202 | 146 |
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| Deferred income taxes | - | - | - | - | - | - | - | - | -2 | -1 |
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| Other, net | - | - | - | - | - | - | 4 | -8 | 0 | -10 |
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| Accounts receivable | 7 | 3 | 4 | 11 | 16 | 21 | 18 | 62 | 10 | 0 |
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| Prepaid expenses and other current assets | 1 | 1 | 2 | 3 | 3 | 13 | 31 | 41 | -12 | -5 |
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| Inventory | - | - | - | - | - | 25 | 19 | -15 | -24 | 10 |
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| Other assets | -0 | 0 | -0 | 0 | 0 | 8 | 4 | 28 | 23 | 1 |
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| Accounts payable | -1 | -1 | 2 | -0 | 1 | -88 | 1 | 2 | -4 | -10 |
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| Accrued expenses and other current liabilities | 3 | -2 | 4 | 4 | 15 | 20 | 18 | 61 | 9 | 30 |
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| Accrued compensation | 3 | 2 | 4 | 8 | 5 | 35 | -5 | -12 | 19 | -20 |
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| Deferred revenue | - | - | - | - | - | - | - | - | -5 | -18 |
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| Operating lease liabilities | - | - | - | - | - | - | - | - | -10 | -11 |
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| Other liabilities | 2 | 1 | -3 | 1 | 1 | -2 | 3 | 0 | -1 | -0 |
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| Net cash provided by operating activities | - | - | -34 | -5 | 30 | -54 | 194 | 189 | 350 | 294 |
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| Capital expenditures | 6 | 2 | 3 | 4 | 4 | 4 | 9 | 16 | 11 | 11 |
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| Capitalized software development costs | - | - | - | - | - | - | - | 156 | 145 | 113 |
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| Proceeds from marketable securities | - | - | - | - | 52 | 2 | 50 | 3 | - | - |
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| Other, net | - | - | - | - | - | - | -9 | -3 | -0 | - |
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| Net cash used in investing activities | - | - | -448 | -257 | 25 | -591 | -73 | -168 | -156 | -124 |
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| Proceeds from Stock Options Exercised | - | 3 | 11 | 31 | 33 | 54 | 26 | 6 | 1 | 4 |
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| Proceeds from employee stock purchase plan | - | - | 2 | 3 | 3 | 5 | 17 | 7 | 10 | 5 |
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| Other, net | - | - | - | - | - | - | -4 | -3 | - | -0 |
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| Net cash provided by financing activities | - | - | 475 | 646 | 35 | 859 | 41 | 6 | 11 | 8 |
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| Net increase in cash and cash equivalents | - | - | - | - | 90 | 215 | 162 | 28 | 205 | 178 |
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| Effect of foreign currency exchange rate changes | - | - | - | - | 0 | 4 | -2 | -3 | 1 | -3 |
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| Income Taxes Paid, Net | - | - | 0 | 0 | 1 | 1 | 4 | 3 | 7 | 9 |
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| Interest paid | 2 | 2 | 9 | 10 | 12 | 15 | 16 | 17 | 17 | 17 |
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| Accruals related to Property and equipment, net and Intangible assets, net | - | - | - | - | - | - | - | - | 11 | 4 |
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