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Regulatory Matters - Public Utilities General Disclosures (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2022 | Mar. 31, 2021
Revenue accounts: |  |
Beginning Balance | $ 18,451 | $ 10,043
Regulatory Asset Increase (Decrease) | 2,404 | 1,601
Refunds (Collections) Adjustments | (6,493) | 1
Ending Balance | 14,362 | 11,645
Cost-recovery accounts: |  |
Beginning Balance | 19,883 | 15,420
Regulatory Asset Increase (Decrease) | (369) | 1,153
Refunds (Collections) Adjustments | (76) | (81)
Ending Balance | 19,438 | 16,492
Total |  |
Beginning Balance | 38,334 | 25,463
Regulatory Asset Increase (Decrease) | 2,035 | 2,754
Refunds (Collections) Adjustments | (6,569) | (80)
Ending Balance | 33,800 | 28,137
MWRAM |  |
Revenue accounts: |  |
Beginning Balance | 16,866 | 12,077
Regulatory Asset Increase (Decrease) | 2,193 | 1,776
Refunds (Collections) Adjustments | 1 | 0
Ending Balance | 19,060 | 13,853
WCMA |  |
Revenue accounts: |  |
Beginning Balance | 3,534 | 666
Regulatory Asset Increase (Decrease) | (100) | 0
Refunds (Collections) Adjustments | (6,495) | 0
Ending Balance | (3,061) | 666
Cost of capital memorandum account |  |
Revenue accounts: |  |
Beginning Balance | (1,563) | (1,561)
Regulatory Asset Increase (Decrease) | (1) | 0
Refunds (Collections) Adjustments | 0 | 0
Ending Balance | (1,564) | (1,561)
All others |  |
Revenue accounts: |  |
Beginning Balance | (386) | (1,139)
Regulatory Asset Increase (Decrease) | 312 | (175)
Refunds (Collections) Adjustments | 1 | 1
Ending Balance | (73) | (1,313)
Cost-recovery accounts: |  |
Beginning Balance | 445 | 445
Regulatory Asset Increase (Decrease) | 128 | 0
Refunds (Collections) Adjustments | 0 | 0
Ending Balance | 573 | 445
Water supply costs |  |
Cost-recovery accounts: |  |
Beginning Balance | 10,545 | 8,123
Regulatory Asset Increase (Decrease) | 244 | 787
Refunds (Collections) Adjustments | 0 | 0
Ending Balance | 10,789 | 8,910
Pension |  |
Cost-recovery accounts: |  |
Beginning Balance | 4,941 | 3,478
Regulatory Asset Increase (Decrease) | 65 | 366
Refunds (Collections) Adjustments | 0 | 0
Ending Balance | 5,006 | 3,844
PRVMA |  |
Cost-recovery accounts: |  |
Beginning Balance | 707 | 1,108
Regulatory Asset Increase (Decrease) | 1 | 0
Refunds (Collections) Adjustments | (76) | (81)
Ending Balance | 632 | 1,027
CEMA |  |
Cost-recovery accounts: |  |
Beginning Balance | 3,245 | 2,266
Regulatory Asset Increase (Decrease) | (807) | 0
Refunds (Collections) Adjustments | 0 | 0
Ending Balance | $ 2,438 | $ 2,266

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