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Regulatory Assets, Net (Tables)
3 Months Ended
Mar. 31, 2021
Regulatory Assets and Liabilities Disclosure [Abstract]  
Schedule of Regulatory Assets, Net
Regulatory assets, net are comprised of the following as of March 31, 2021, and December 31, 2020:
March 31, 2021December 31, 2020
Regulatory assets:
Income tax temporary differences, net$7,345 6,230 
Postretirement pensions and other medical benefits96,682 95,559 
Business combinations debt premium, net21,843 22,479 
Balancing and memorandum accounts, net28,137 25,463 
Water Rate Adjustment (“WRA”)174 323 
Other, net7,437 8,176 
Total regulatory assets, net in Consolidated Balance Sheets161,618 158,230 
Less: current regulatory asset, net226 1,748 
Total regulatory assets, net, less current portion$161,392 156,482