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Disposals (Tables) | 12 Months Ended
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Dec. 31, 2022
Discontinued Operations and Disposal Groups [Abstract] |
Schedule of Disposal Groups, Including Discontinued Operations | The following table summarizes the operating results of the Tripwire disposal group up to the February 22, 2022 disposal date:
| Years Ended December 31,
| 2022 |  | 2021 |  | 2020
| (In thousands)
Revenues | $ | 12,067 |  |  | $ | 106,840 |  |  | $ | 110,524 |
Cost of sales | (3,256) |  |  | (24,321) |  |  | (22,857) |
Gross profit | 8,811 |  |  | 82,519 |  |  | 87,667 |
Selling, general and administrative expenses | (8,185) |  |  | (48,308) |  |  | (42,741) |
Research and development expenses | (5,528) |  |  | (34,433) |  |  | (34,276) |
Amortization of intangible assets | (638) |  |  | (7,716) |  |  | (35,354) |
Asset impairments | — |  |  | (131,178) |  |  | — |
Loss before taxes | $ | (5,540) |  |  | $ | (139,116) |  |  | $ | (24,704) |
The following table provides the major classes of assets and liabilities of the Tripwire disposal group:
| December 31,
| 2021 |  |
| (In thousands)
Assets: |  |  |
Cash and cash equivalents | $ | 2,194 |  |  |
Receivables, net | 28,773 |  |  |
Inventories, net | 150 |  |  |
Other current assets | 7,418 |  |  |
Property, plant and equipment, less accumulated depreciation | 6,250 |  |  |
Operating lease right-of-use assets | 3,893 |  |  |
Goodwill | 331,024 |  |  |
Intangible assets, less accumulated amortization | 63,541 |  |  |
Deferred income taxes | 584 |  |  |
Other long-lived assets | 5,325 |  |  |
Total assets of Tripwire disposal group | $ | 449,152 |  |  |
Liabilities: |  |  |
Accounts payable | $ | 6,458 |  |  |
Accrued liabilities | 56,208 |  |  |
Deferred income taxes | 8,878 |  |  |
Long-term operating lease liabilities | 5,257 |  |  |
Other long-term liabilities | 20,192 |  |  |
Total liabilities of Tripwire disposal group | $ | 96,993 |  |  |
The following table summarizes the operating results of the disposal group up to the July 2, 2020 disposal date for the year ended December 31, 2020:
| Year Ended December 31,
| 2020 |  |
| (In thousands)
Revenues | $ | 109,195 |  |  |
Cost of sales | (70,199) |  |  |
Gross profit | 38,996 |  |  |
Selling, general and administrative expenses | (39,947) |  |  |
Research and development expenses | (15,083) |  |  |
Asset impairment of discontinued operations | (113,007) |  |  |
Interest expense, net | (432) |  |  |
Non-operating pension cost | (169) |  |  |
Loss before taxes | $ | (129,642) |  |  |

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