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GOODWILL AND OTHER INTANGIBLE ASSETS, NET | 12 Months Ended
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Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
GOODWILL AND OTHER INTANGIBLE ASSETS | GOODWILL AND OTHER INTANGIBLE ASSETS, NET Changes in the carrying amount of goodwill consisted of the following:
| Year Ended December 31,
| 2021 |  |
| (In thousands)
Beginning balance | $ | — |  |  |
Acquisition of business | 7,470 |  |  |
Impairment losses | — |  |  |
Ending balance | $ | 7,470 |  |  |
The ending balance of goodwill includes no accumulated impairment losses to date. Refer to Note 3 for additional information related to the Printronix acquisition. Other intangible assets, net consisted of the following:
| December 31, 2021
| Weighted Average Amortization Period |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value
|  |  | (In thousands)
Patents: |  |  |  |  |  |  |
Intellectual property operations | 6 years |  | $ | 331,403 |  |  | $ | (294,341) |  |  | $ | 37,062 |
Industrial operations | 7 years |  | 3,400 |  |  | (112) |  |  | 3,288 |
Total patents |  |  | 334,803 |  |  | (294,453) |  |  | 40,350 |
Customer relationships - industrial operations | 7 years |  | 5,300 |  |  | (174) |  |  | 5,126 |
Trade name and trademarks - industrial operations | 7 years |  | 3,430 |  |  | (113) |  |  | 3,317 |
Total |  |  | $ | 343,533 |  |  | $ | (294,740) |  |  | $ | 48,793 |
| December 31, 2020
| Weighted Average Amortization Period |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Book Value
|  |  | (In thousands)
Patents: |  |  |  |  |  |  |
Intellectual property operations | 7 years |  | $ | 336,834 |  |  | $ | (319,922) |  |  | $ | 16,912 |
Total patents |  |  | $ | 336,834 |  |  | $ | (319,922) |  |  | $ | 16,912 |
Total intangible asset amortization expense in the consolidated statements of operations was $10.3 million and $4.7 million for the years ended December 31, 2021 and 2020, respectively. The Company did not record charges related to the impairment of intangible assets for the years ended December 31, 2021 and 2020. There was approximately $152,000 in accelerated amortization of intangible assets for the year ended December 31, 2021 and none in 2020. During 2021, Acacia reduced its gross patent costs and accumulated amortization by approximately $35.0 million for patents that were fully amortized. Intellectual Property Operations amortization of patents is expensed in cost of revenues and Industrial Operations amortization, for the period from October 7, 2021 through December 31, 2021, is expensed in general and administrative expenses. The following table presents the scheduled annual aggregate amortization expense (in thousands):
Years Ending December 31, |
2022 | $ | 12,136 |
2023 | 12,068 |
2024 | 10,692 |
2025 | 8,348 |
2026 | 2,483 |
Thereafter | 3,066 |
Total | $ | 48,793 |
During the year ended December 31, 2021, Acacia accrued certain patent and patent rights acquisition costs, of which $5.0 million is due February 18, 2023. Such amount is included in other long-term liabilities in the consolidated balance sheet as of December 31, 2021.

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- Definition The entire disclosure for all or part of the information related to intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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