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Revenue from Contract with Customers (Tables)
6 Months Ended
Jun. 30, 2019
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue For the three months ended June 30, 2019 and 2018, disaggregated revenues from contracts with customers by segment were as follows:
 
Three Months Ended June 30,
 
Six Months Ended June 30,
(dollar in thousands)
2019
 
2018
 
2019
 
2018
Water:
 
 
 
 
 
 
 
Tariff-based revenues
$
76,876

 
$
70,251

 
$
136,451

 
$
136,026

Surcharges (cost-recovery activities)
763

 
728

 
1,054

 
1,521

Other
461

 
453

 
920

 
895

Water revenues from contracts with customers
78,100

 
71,432

 
138,425

 
138,442

WRAM under-collection (alternative revenue program)
10,040

 
5,301

 
14,438

 
2,703

Total water revenues
88,140

 
76,733

 
152,863

 
141,145

 
 
 
 
 
 
 
 
Electric:
 
 
 
 
 
 
 
Tariff-based revenues
7,698

 
7,795

 
18,964

 
17,814

Surcharges (cost-recovery activities)
43

 
63

 
97

 
110

Electric revenues from contracts with customers
7,741

 
7,858

 
19,061

 
17,924

BRRAM over-collection (alternative revenue program)
(333
)
 
(17
)
 
(1,024
)
 
(251
)
Total electric revenues
7,408

 
7,841

 
18,037

 
17,673

 
 
 
 
 
 
 
 
Contracted services:
 
 
 
 
 
 
 
Water
14,620

 
14,233

 
27,975

 
27,233

Wastewater
14,479

 
8,094

 
27,505

 
15,578

Contracted services revenues from contracts with customers
29,099

 
22,327

 
55,480

 
42,811

 
 
 
 
 
 
 
 
Total revenues
$
124,647

 
$
106,901

 
$
226,380

 
$
201,629


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 related entirely to ASUS, were as follows:    
(dollar in thousands)
 
June 30, 2019
 
January 1, 2019
 
 
 
 
 
Receivable from the U.S. government
 
$
59,859

 
$
61,126

Contract assets
 
$
31,557

 
$
24,447

Contract liabilities
 
$
11,564

 
$
7,530