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Patents | 3 Months Ended
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Mar. 31, 2019
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Identifiable Intangible Assets | PATENTS Acacia’s only identifiable intangible assets at March 31, 2019 and December 31, 2018 are patents and patent rights. Patent-related accumulated amortization totaled $320,236,000 and $319,580,000 as of March 31, 2019 and December 31, 2018, respectively. Acacia’s patents have remaining estimated economic useful lives ranging from one to five years. The weighted-average remaining estimated economic useful life of Acacia’s patents is approximately four years. The following table presents the scheduled annual aggregate amortization expense as of March 31, 2019 (in thousands):
For the years ending December 31, |
Remainder of 2019 | $ | 2,464 |
2020 | 2,421 |
2021 | 1,561 |
2022 | 1,561 |
2023 | 1,486 |
Thereafter | 188 |
| $ | 9,681 |
For the three months ended March 31, 2019, Acacia accrued patent and patent rights acquisition costs totaling $3,750,000. The patents and patent rights acquired have estimated economic useful lives of approximately five years.

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- Definition The entire disclosure for goodwill and 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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