Regulatory Assets and Liabilities (Tables)

6 Months Ended

Jun. 30, 2020

Regulatory Assets and Liabilities Disclosure [Abstract]

Schedule of Regulatory Assets

Regulatory assets are comprised of the following as of June 30, 2020, and December 31, 2019:

	June 30, 2020		December 31, 2019
Regulatory assets:
Income tax temporary differences, net	$	6,500	2,433
Postretirement pensions and other medical benefits	76,439		73,525
Business combinations debt premium, net	23,749		25,020
Balancing and memorandum accounts, net	17,615		5,283
WRA	7,466		9,108
Other, net	6,461		5,048
Total regulatory assets, net in Consolidated Balance Sheets	138,230		120,417
Less: current regulatory asset, net	5,691		6,472
Total regulatory assets, net, less current portion	$	132,539	113,945