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v3.20.1

Balancing and Memorandum Accounts (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2020 | Mar. 31, 2019
Public Utilities, General Disclosures [Line Items] |  |
WCMA Reserve |  | $ 80
Balancing and Memorandum Revenue Account [Roll Forward] |  |
Beginning Balance | $ (1,940) | 25,549
Regulatory Asset Increase (Decrease) | 1,757 | 611
Refunds (Collections) Adjustments | 6,841 | (2,679)
Ending Balance | 6,658 | 23,481
Balancing and Memorandum Cost Recovery Account [Roll Forward] |  |
Beginning Balance | 7,223 | 8,864
Regulatory Asset Increase (Decrease) | 1,183 | (558)
Refunds (Collections) Adjustments | (16) | (311)
Ending Balance | 8,390 | 7,995
Balancing and Memorandum Account [Roll Forward] |  |
Beginning Balance | 5,283 | 34,413
Regulatory Asset Increase (Decrease) | 2,940 | 53
Refunds (Collections) | 6,825 | (2,990)
Ending Balance | 15,048 | 31,476
Total balance, net under-collection amount | $ 1,780 |
Authorized revenue, threshold percentage | 2.00% |
2014-2017 WCMA |  |
Balancing and Memorandum Revenue Account [Roll Forward] |  |
Beginning Balance | $ 708 | 7,750
Regulatory Asset Increase (Decrease) | 0 | 0
Refunds (Collections) Adjustments | (43) | (838)
Ending Balance | 665 | 6,912
2018 WCMA |  |
Public Utilities, General Disclosures [Line Items] |  |
Regulatory liability, due to sales in excess of authorized usage |  | 309
Balancing and Memorandum Revenue Account [Roll Forward] |  |
Beginning Balance | 0 | 9,386
Regulatory Asset Increase (Decrease) | 0 | (389)
Refunds (Collections) Adjustments | 0 | 0
Ending Balance | 0 | 8,997
2019 WCMA |  |
Balancing and Memorandum Revenue Account [Roll Forward] |  |
Beginning Balance | 0 | 0
Regulatory Asset Increase (Decrease) | 0 | (752)
Refunds (Collections) Adjustments | 0 | 0
Ending Balance | 0 | (752)
2012 General Rate Case true-up |  |
Balancing and Memorandum Revenue Account [Roll Forward] |  |
Beginning Balance | 752 | 11,328
Regulatory Asset Increase (Decrease) | 0 | 95
Refunds (Collections) Adjustments | 0 | (1,271)
Ending Balance | 752 | 10,152
Cost of capital memorandum account |  |
Balancing and Memorandum Revenue Account [Roll Forward] |  |
Beginning Balance | (1,553) | (1,523)
Regulatory Asset Increase (Decrease) | (5) | (9)
Refunds (Collections) Adjustments | 0 | 0
Ending Balance | (1,558) | (1,532)
Tax memorandum account |  |
Balancing and Memorandum Revenue Account [Roll Forward] |  |
Beginning Balance | (6,643) | (6,504)
Regulatory Asset Increase (Decrease) | (3) | (41)
Refunds (Collections) Adjustments | 6,978 | 0
Ending Balance | 332 | (6,545)
All others |  |
Balancing and Memorandum Revenue Account [Roll Forward] |  |
Beginning Balance | 4,796 | 5,112
Regulatory Asset Increase (Decrease) | 1,765 | 1,707
Refunds (Collections) Adjustments | (94) | (570)
Ending Balance | 6,467 | 6,249
Balancing and Memorandum Cost Recovery Account [Roll Forward] |  |
Beginning Balance | 446 | 1,090
Regulatory Asset Increase (Decrease) | 1 | 3
Refunds (Collections) Adjustments | (4) | (78)
Ending Balance | 443 | 1,015
Water supply costs |  |
Balancing and Memorandum Cost Recovery Account [Roll Forward] |  |
Beginning Balance | 4,328 | 9,617
Regulatory Asset Increase (Decrease) | 767 | (745)
Refunds (Collections) Adjustments | (34) | (655)
Ending Balance | 5,061 | 8,217
Pension |  |
Balancing and Memorandum Cost Recovery Account [Roll Forward] |  |
Beginning Balance | 2,449 | (1,843)
Regulatory Asset Increase (Decrease) | 415 | 184
Refunds (Collections) Adjustments | 22 | 422
Ending Balance | $ 2,886 | $ (1,237)

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