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Intangible assets
3 Months Ended
Mar. 31, 2020
Intangible assets [Abstract]  
Intangible assets
13.
Intangible assets

The following table summarizes the composition of intangible assets as of March 31, 2020 and December 31, 2019:

  
March 31, 2020
 
  
Gross Carrying
Amount
  
Accumulated
Amortization
  
Net Carrying
Amount
  
Weighted
Average Life
 
Definite-lived intangible assets
            
Shannon LNG permits
 
$
41,140
   
1,414
  
$
39,726
   
40
 
Easements
  
1,559
   
152
   
1,407
   
30
 
                 
Indefinite-lived intangible assets
                
Easements
  
1,143
   
-
   
1,143
   
n/a
 
Total intangible assets
 
$
43,842
  
$
1,566
  
$
42,276
     

  
December 31, 2019
 
  
Gross Carrying
Amount
  
Accumulated
Amortization
  
Net Carrying
Amount
  
Weighted
Average Life
 
Definite-lived intangible assets
            
Shannon LNG leases and permits
 
$
42,157
  
$
1,198
  
$
40,959
   
40
 
Easements
  
1,559
   
139
   
1,420
   
30
 
                 
Indefinite-lived intangible assets
                
Easements
  
1,161
   
-
   
1,161
   
n/a
 
Total intangible assets
 
$
44,877
  
$
1,337
  
$
43,540
     

As of March 31, 2020 and December 31, 2019, the weighted-average remaining amortization periods for the intangible assets was 38.2 years and 38.8 years, respectively. As of January 1, 2020, intangible assets associated with favorable lease terms in acquired leases have been reclassified as a ROU assets as a result of adoption of ASC 842.

Amortization for the three months ended March 31, 2020 and 2019 totaled $270 and $278, respectively.