| 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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| Cash and cash equivalents | 20 | 13 | 51 | 68 | 73 | 70 | 59 | 70 | 167 | 324 |
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| Marketable investments | - | - | - | - | - | - | 195 | 118 | 122 | 16 |
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| Accounts Receivable, after Allowance for Credit Loss, Current | 29 | 43 | 58 | 82 | 106 | 115 | 134 | 203 | 202 | 168 |
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| Inventories | 57 | 73 | 95 | 116 | 153 | 220 | 264 | 334 | 388 | 407 |
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| Prepaid expenses and other current assets | 9 | 19 | 15 | 12 | 15 | 19 | 29 | 30 | 36 | 37 |
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| Total current assets | 244 | 264 | 382 | 411 | 463 | 618 | 681 | 756 | 915 | 951 |
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| Property and equipment, net | 9 | 21 | 31 | 35 | 52 | 48 | 59 | 65 | 73 | 63 |
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| Operating lease right-of-use assets | - | - | - | - | 44 | 41 | 132 | 193 | 189 | 178 |
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| Finance lease right-of-use assets | - | - | - | - | 40 | 38 | 36 | 33 | 31 | 28 |
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| Intangible assets, net | - | - | 24 | 27 | 25 | 11 | 91 | 81 | 71 | 7 |
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| Goodwill | - | - | 8 | 8 | 8 | 8 | 166 | 166 | 166 | 166 |
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| Deferred taxes | - | 22 | 27 | 33 | 31 | 50 | 66 | 64 | 85 | 100 |
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| Other non-current assets | 0 | 0 | 1 | 1 | 3 | 9 | 13 | 13 | 26 | 41 |
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| Total assets | 264 | 308 | 477 | 515 | 666 | 823 | 1,244 | 1,371 | 1,556 | 1,533 |
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| Accounts payable | 3 | 4 | 7 | 8 | 15 | 14 | 13 | 27 | 27 | 31 |
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| Accrued liabilities | 26 | 32 | 45 | 58 | 68 | 86 | 100 | 106 | 111 | 112 |
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| Current operating lease liabilities | - | - | - | - | 4 | 5 | 8 | 10 | 11 | 12 |
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| Current finance lease liabilities | - | - | - | - | 4 | 1 | 2 | 2 | 2 | 2 |
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| Total current liabilities | 28 | 36 | 52 | 66 | 91 | 106 | 123 | 145 | 151 | 158 |
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| Operating Lease, Liability, Noncurrent | - | - | - | - | 47 | 44 | 137 | 199 | 197 | 187 |
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| Finance Lease, Liability, Noncurrent | - | - | - | - | 27 | 27 | 27 | 25 | 24 | 22 |
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| Other non-current liabilities | 3 | 1 | 18 | 19 | 15 | 8 | 4 | 3 | 5 | 15 |
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| Total liabilities | 31 | 42 | 76 | 93 | 180 | 185 | 290 | 372 | 377 | 382 |
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| Preferred Stock, Value, Issued | - | - | - | - | - | - | - | - | - | - |
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| Common Stock, Value, Issued | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
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| Additional paid-in capital | 252 | 274 | 397 | 415 | 431 | 598 | 911 | 963 | 1,047 | 1,097 |
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| Accumulated other comprehensive loss | -2 | -5 | 2 | -2 | -2 | 3 | -3 | -8 | -3 | -6 |
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| Retained earnings | -17 | -3 | 2 | 9 | 58 | 41 | 46 | 44 | 135 | 60 |
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| Total Penumbra, Inc. stockholders’ equity | 233 | 267 | 400 | 422 | 486 | 641 | 954 | 999 | 1,179 | 1,151 |
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| Total liabilities and stockholders’ equity | 264 | 308 | 477 | 515 | 666 | 823 | 1,244 | 1,371 | 1,556 | 1,533 |
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