| Dec 31, 2011 | Dec 31, 2012 | Dec 31, 2013 | Dec 31, 2014 | 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 | 38 | 62 | 68 | 43 | 38 | 44 | 47 | 31 | 22 | 20 | 23 | 30 |
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| Restricted cash | - | - | - | - | 7 | 6 | 20 | 20 | 0 | 0 | 0 | 4 |
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| Accounts Receivable, after Allowance for Credit Loss, Current | 64 | 68 | 90 | 98 | 82 | 76 | 72 | 69 | 72 | 68 | 64 | 64 |
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| Prepaid expenses and other current assets | 10 | 9 | 10 | 11 | 15 | 20 | 15 | 17 | 15 | 16 | 11 | 10 |
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| Total current assets | 119 | 149 | 179 | 179 | 180 | 146 | 154 | 137 | 109 | 105 | 98 | 108 |
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| Property and equipment, net | - | - | - | - | - | - | 32 | 31 | 36 | 36 | 42 | 47 |
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| Operating right-of-use assets | - | - | - | - | - | - | 37 | 29 | 29 | 24 | 19 | 13 |
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| Deferred tax assets | - | - | - | - | 5 | 4 | 2 | 3 | 3 | 3 | 3 | 3 |
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| Intangible assets, net | 53 | 41 | 33 | 16 | 160 | 127 | 80 | 52 | 40 | 13 | 8 | 5 |
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| Goodwill | 102 | 103 | 103 | 104 | 642 | 641 | 416 | 418 | 436 | 388 | 310 | 246 |
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| Other non-current assets | 0 | 0 | 1 | 1 | 7 | 9 | 3 | 8 | 10 | 11 | 12 | 8 |
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| Total assets | 320 | 336 | 363 | 354 | 1,022 | 954 | 724 | 678 | 663 | 581 | 491 | 430 |
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| Accounts Payable, Current | 10 | 7 | 3 | 3 | 28 | 30 | 45 | 37 | 24 | 29 | 31 | 16 |
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| Accrued Liabilities, Current | 26 | 24 | 33 | 37 | 86 | 58 | 56 | 48 | 45 | 43 | 34 | 35 |
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| Contract with Customer, Liability, Current | - | - | - | - | - | 64 | 58 | 59 | 54 | 53 | 49 | 45 |
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| Line of Credit, Current | - | - | - | - | - | - | - | - | - | - | 16 | - |
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| Dividends Payable, Current | - | - | - | - | - | - | - | - | - | - | 24 | 9 |
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| Customer advances | - | - | - | - | - | - | 10 | 12 | 12 | 12 | 11 | 10 |
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| Current operating lease liabilities | - | - | - | - | - | - | 7 | 7 | 8 | 8 | 8 | 9 |
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| Other current liabilities | - | - | - | - | 3 | 2 | 4 | 6 | 13 | 13 | 5 | 7 |
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| Total current liabilities | 112 | 121 | 135 | 152 | 250 | 169 | 190 | 184 | 165 | 165 | 183 | 131 |
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| Secured term loan | - | - | - | - | - | - | - | - | - | - | - | 41 |
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| Operating Lease, Liability, Noncurrent | - | - | - | - | - | - | 42 | 36 | 36 | 30 | 23 | 15 |
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| Accrued Cost Of Revenues, Noncurrent | - | - | - | - | - | - | - | - | 16 | 25 | 33 | 34 |
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| Deferred tax liabilities | - | - | - | - | 4 | 6 | 0 | 1 | 2 | 2 | 1 | 1 |
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| Other non-current liabilities | 1 | 1 | 1 | 1 | 7 | 13 | 14 | 20 | 17 | 11 | 8 | 10 |
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| Total liabilities | 129 | 141 | 165 | 179 | 366 | 403 | 465 | 449 | 252 | 249 | 247 | 231 |
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| Temporary Equity, Carrying Amount, Attributable to Parent | - | - | - | - | - | - | - | - | 188 | 188 | 188 | 207 |
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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 | 0 | 0 |
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| Additional paid-in capital | 259 | 275 | 293 | 324 | 1,408 | 1,561 | 1,609 | 1,622 | 1,684 | 1,691 | 1,697 | 1,714 |
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| Accumulated other comprehensive loss | 1 | 2 | 2 | -6 | -6 | -11 | -12 | -7 | -12 | -16 | -14 | -18 |
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| Accumulated deficit | -69 | -81 | -83 | -93 | -609 | -769 | -1,108 | -1,156 | -1,219 | -1,301 | -1,396 | -1,474 |
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| Treasury stock, at cost, 338,239 shares as of December 31, 2024 and 2023 | - | - | - | - | - | - | - | - | - | - | 230 | 230 |
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| Total stockholders' equity (deficit) | 191 | 196 | 199 | 175 | 656 | 552 | 259 | 229 | 223 | 144 | 56 | -8 |
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| Total liabilities, convertible redeemable preferred stock and stockholders' equity (deficit) | 320 | 336 | 363 | 354 | 1,022 | 954 | 724 | 678 | 663 | 581 | 491 | 430 |
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