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Revenue from Contract with Customers (Tables)
6 Months Ended
Jun. 30, 2021
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue For the three and six months ended June 30, 2021 and 2020, disaggregated revenues from contracts with customers by segment were as follows:
Three Months Ended June 30,Six Months Ended June 30,
(dollar in thousands)2021202020212020
Water:
Tariff-based revenues$86,687 $77,264 $160,975 $146,518 
Surcharges (cost-recovery activities)975 962 1,509 1,696 
Other523 491 1,040 986 
Water revenues from contracts with customers
88,185 78,717 163,524 149,200 
WRAM under-collection (alternative revenue program)3,448 8,357 3,138 9,298 
Total water revenues
91,633 87,074 166,662 158,498 
Electric:
Tariff-based revenues8,330 7,384 20,007 17,416 
Surcharges (cost-recovery activities)44 178 246 436 
Electric revenues from contracts with customers
8,374 7,562 20,253 17,852 
BRRAM (over) under-collection (alternative revenue program)(266)117 (606)795 
Total electric revenues8,108 7,679 19,647 18,647 
Contracted services:
Water 18,765 13,472 37,648 28,173 
Wastewater9,908 13,053 21,517 25,037 
Contracted services revenues from contracts with customers28,673 26,525 59,165 53,210 
Total AWR revenues$128,414 $121,278 $245,474 $230,355 
Contract with Customer, Asset and Liability
The opening and closing balances of the receivable from the U.S. government, contract assets, and contract liabilities from contracts with customers, which are related entirely to ASUS, were as follows:    
(dollar in thousands)June 30, 2021December 31, 2020
Unbilled receivables$16,347 $14,924 
Receivable from the U.S. government$78,655 $74,670 
Contract assets$11,172 $10,257 
Contract liabilities$688 $1,800