XML 24 R12.htm IDEA: XBRL DOCUMENT v3.8.0.1
Patents
3 Months Ended
Mar. 31, 2018
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Identifiable Intangible Assets
PATENTS

Acacia’s only identifiable intangible assets at March 31, 2018 and December 31, 2017 are patents and patent rights. Patent-related accumulated amortization totaled $387,550,000 and $382,220,000 as of March 31, 2018 and December 31, 2017, respectively.

Acacia’s patents have remaining estimated economic useful lives ranging from one to six 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, 2018 (in thousands):
For the years ending December 31,
 
Remainder of 2018
$
15,212

2019
18,527

2020
6,134

2021
5,261

2022
5,256

Thereafter
6,197

 
$
56,587