ADTRAN Holdings, Inc.ADTN
| Dec 31, 2010 | Dec 31, 2011 | Dec 31, 2012 | Dec 31, 2013 | 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 | Dec 31, 2023 | Dec 31, 2024 |
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| Net Loss | - | - | - | - | - | - | - | - | -19 | -53 | 2 | -9 | -9 | -259 | -441 |
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| Depreciation and amortization | 11 | 11 | 14 | 15 | 15 | 14 | 14 | 16 | 16 | 18 | 17 | 16 | 68 | 113 | 91 |
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| Goodwill impairment | - | - | - | - | - | - | - | - | - | - | - | - | - | 38 | 293 |
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| Amortization of debt issuance cost | - | - | - | - | - | - | - | - | - | - | - | - | 0 | 1 | 4 |
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| (Accretion) amortization on available-for-sale investments, net | - | - | - | - | - | - | - | - | 0 | 0 | - | - | -0 | 0 | - |
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| (Gain) loss on investments | - | - | - | - | - | - | - | - | - | - | 6 | 5 | -10 | 3 | 5 |
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| Net loss on disposal of property, plant and equipment | -0 | -0 | 0 | -0 | -0 | -1 | -0 | 0 | -0 | -0 | - | - | -0 | -0 | -1 |
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| Stock-based compensation expense | 8 | 9 | 9 | 9 | 9 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 28 | 16 | 15 |
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| Deferred income taxes | -1 | 1 | -4 | -4 | -6 | -1 | -3 | 14 | -17 | 30 | -1 | -2 | -62 | 16 | 2 |
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| Inventory Write-down | - | - | - | - | - | - | - | - | - | - | - | - | - | 24 | 4 |
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| Inventory reserves | - | - | - | - | - | - | - | - | - | - | - | -5 | -2 | 26 | 4 |
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| Other, net | - | - | - | - | - | - | - | - | - | - | -0 | -0 | - | 3 | - |
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| Accounts receivable, net | 3 | 5 | 4 | 6 | 3 | -15 | 21 | 49 | -49 | -8 | 7 | 61 | -1 | -66 | -46 |
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| Other receivables | -0 | 6 | -3 | 2 | 20 | -12 | -4 | 10 | 9 | -20 | 5 | -10 | 20 | -10 | -11 |
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| Income taxes receivable | 3 | -3 | - | - | - | - | - | - | - | - | - | - | - | 3 | -1 |
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| Inventory | 29 | 13 | -7 | -10 | -2 | 7 | 11 | 16 | -24 | -1 | 26 | 11 | 73 | -21 | -75 |
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| Prepaid expenses, other current assets and other assets | - | - | - | - | - | - | - | - | - | - | - | - | 7 | 30 | 11 |
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| Accounts payable | -3 | 6 | 7 | 5 | 10 | -6 | 27 | -18 | -4 | -13 | 5 | 53 | 28 | -92 | 12 |
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| Accrued expenses and other liabilities | - | - | - | -15 | -0 | -10 | 9 | -5 | -3 | -5 | 5 | 10 | -20 | 18 | 6 |
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| Income taxes payable | -3 | 3 | -2 | 4 | 11 | -12 | -3 | 4 | 8 | -9 | -2 | 5 | -2 | -4 | -5 |
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| Net cash provided by (used in) operating activities | 93 | 151 | 86 | 60 | - | - | - | - | 55 | -2 | -17 | 3 | -44 | -46 | 103 |
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| Purchases of property, plant and equipment | 10 | 12 | 12 | 8 | 11 | 12 | 21 | 15 | 8 | 9 | 6 | 6 | 17 | 43 | 32 |
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| Purchases of intangibles - developed technology | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 31 |
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| Proceeds from sales and maturities of available-for-sale investments | 275 | 466 | 282 | 344 | 230 | 280 | 225 | 174 | 154 | 47 | 105 | 50 | 52 | 11 | 1 |
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| Purchases of available-for-sale investments | - | - | - | - | - | - | - | - | 123 | 49 | 57 | 35 | 24 | 1 | 0 |
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| Payments and Proceeds From Beneficial Interests In Securitized Accounts Receivable | - | - | - | - | - | - | - | - | - | - | - | - | - | - | -0 |
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| Proceeds from Sale of Property, Plant, and Equipment | - | - | 0 | - | 0 | 0 | - | 0 | - | - | 0 | - | 0 | - | - |
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| Acquisition of business, net of cash acquired | - | - | - | - | - | - | - | - | - | -0 | - | - | -44 | - | - |
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| Net cash (used in) provided by investing activities | -75 | -123 | -5 | 74 | - | - | - | - | 0 | -10 | 41 | 10 | 56 | -32 | -62 |
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| Tax withholdings related to stock-based compensation settlements | - | - | - | - | - | - | - | - | - | - | 1 | 2 | 4 | 6 | 1 |
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| Proceeds from stock option exercises | 25 | 34 | 6 | 4 | 3 | 1 | 5 | 13 | 1 | 1 | - | 6 | 7 | 1 | 1 |
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| Dividend payments | 23 | 23 | 23 | 21 | 20 | 18 | 18 | 17 | 17 | 17 | 17 | 18 | 23 | 21 | - |
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| Proceeds from receivables purchase agreement | - | - | - | - | - | - | - | - | - | - | - | - | - | 14 | 69 |
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| Repayments on receivables purchase agreement | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 84 |
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| Proceeds from Lines of Credit | - | - | - | - | - | - | - | - | - | - | - | 10 | 142 | 164 | 26 |
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| Repayment of revolving credit agreements | - | - | - | - | - | - | - | - | - | - | - | 10 | 48 | 65 | 31 |
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| Redemption of redeemable non-controlling interest | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 17 |
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| Payment of annual recurring compensation to non-controlling interest | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 10 |
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| Payment of debt issuance cost | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 1 | 2 |
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| Repayment of notes payable | - | - | - | - | - | - | - | - | - | - | - | - | 18 | 25 | - |
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| Net cash (used in) provided by financing activities | -12 | -16 | -55 | -142 | - | - | - | - | -32 | -18 | -43 | -13 | 53 | 59 | -50 |
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| Net (decrease) increase in cash and cash equivalents | - | - | - | - | - | - | - | - | - | -30 | -18 | 0 | 65 | -19 | -9 |
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| Effect of exchange rate changes | - | - | - | - | - | - | - | - | - | -2 | 5 | -4 | -13 | -3 | -0 |
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| Cash paid for interest | - | - | - | - | - | - | - | - | 1 | 1 | 0 | 0 | 2 | 13 | 21 |
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| Income Taxes Paid | 58 | 51 | 31 | 15 | 10 | 20 | 19 | 3 | 4 | 9 | 8 | 2 | 4 | 19 | 7 |
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| Cash used in operating activities related to operating leases | - | - | - | - | - | - | - | - | - | - | - | - | 5 | 10 | 9 |
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| Right-of-Use Asset Obtained in Exchange for Operating Lease Liability | - | - | - | - | - | - | - | - | - | - | - | - | 3 | 18 | 5 |
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| Noncash or Part Noncash Acquisition, Value of Assets Acquired | - | - | - | 0 | 0 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 3 |
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| Redemption of redeemable non-controlling interest | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 3 |
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| Adtran Networks common shares exchanged in acquisition | - | - | - | - | - | - | - | - | - | - | - | - | 565 | - | - |
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| Adtran Networks options assumed in acquisition | - | - | - | - | - | - | - | - | - | - | - | - | 13 | - | - |
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| Non-controlling interest related to Adtran Networks | - | - | - | - | - | - | - | - | - | - | - | - | 316 | - | - |
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