Regulatory Assets and Liabilities (Tables)

3 Months Ended

Mar. 31, 2017

Regulatory assets and liabilities are comprised of the following as of March 31, 2017 and December 31, 2016:



Description	March 31, 2017		December 31, 2016
Regulatory assets:
Income tax temporary differences, net	$	10,139	10,139
Postretirement pensions and other medical benefits	109,795		109,795
Balancing and memorandum accounts, net	24,067		25,909
Other, net	5,855		5,930
Total regulatory assets, net in Consolidated Balance Sheets	$	149,856	151,773
Less: current regulatory asset, net	10,469		16,064
Total regulatory assets, net, less current portion	$	139,387	135,709