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Intangible Assets and Goodwill (Tables)
 12 Months Ended
Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]  
Intangible Assets
The following table presents the Company’s intangible assets (in thousands):
 December 31, 2021
 Gross
Carrying
Value		Accumulated
Amortization		ASC 842
Adjustment		Total
Acquired intangible assets:    
Developed product rights for Auryxia213,603 (105,476)— 108,127 
Total$213,603 $(105,476)$— $108,127 
 
 December 31, 2020
 Gross
Carrying
Value		Accumulated
Amortization		ASC 842
Adjustment		Total
Acquired intangible assets:   
Developed product rights for Auryxia$213,603 $(69,433)$— $144,170 
Favorable lease545 (5)(540)— 
Total$214,148 $(69,438)$(540)$144,170 
Estimated Future Amortization Expense for Intangible Assets Estimated future amortization expense for the intangible asset as of December 31, 2021 is as follows (in thousands):
 Total
2022$36,043 
202336,042 
202436,042 
2025— 
2026— 
Thereafter— 
 $108,127 
Goodwill
Goodwill was $55.1 million as of December 31, 2021 and 2020, derived as follows (in thousands):

Total Merger consideration$527,754 
Less: Fair value of identified acquired assets and liabilities, net(472,701)
Goodwill$55,053