XML 25 R15.htm IDEA: XBRL DOCUMENT v3.22.1
Intangible Assets
 3 Months Ended
Mar. 31, 2022
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Intangible Assets Intangible Assets
The following table summarizes the components of our intangible assets at the dates indicated:
 
 March 31, 2022December 31, 2021
 Gross
Carrying
Amount		Accumulated
Amortization		Carrying
Value		Gross
Carrying
Amount		Accumulated
Amortization		Carrying
Value
Marine contract intangibles$800 $616 $184 $800 $607 $193 
Offshore pipeline contract intangibles158,101 55,474 102,627 158,101 53,394 104,707 
Other40,240 16,268 23,972 37,933 15,770 22,163 
Total$199,141 $72,358 $126,783 $196,834 $69,771 $127,063 

Our amortization of intangible assets for the periods presented was as follows:
Three Months Ended
March 31,
20222021
Amortization of intangible assets$2,588 $2,600 
We estimate that our amortization expense for the next five years will be as follows:
Remainder of2022$8,988 
2023$11,733 
2024$11,368 
2025$11,143 
2026$10,843