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Revenue from Contract with Customers (Tables)
9 Months Ended
Sep. 30, 2019
Revenue from Contract with Customer [Abstract]  
Disaggregation of Revenue For the three and nine months ended September 30, 2019 and 2018, disaggregated revenues from contracts with customers by segment were as follows:
 
Three Months Ended September 30,
 
Nine Months Ended September 30,
(dollar in thousands)
2019
 
2018
 
2019
 
2018
Water:
 
 
 
 
 
 
 
Tariff-based revenues
$
89,050

 
$
87,204

 
$
225,501

 
$
223,230

Surcharges (cost-recovery activities)
1,900

 
937

 
2,954

 
2,458

Other
555

 
486

 
1,475

 
1,381

Water revenues from contracts with customers
91,505

 
88,627

 
229,930

 
227,069

WRAM under (over)-collection (alternative revenue program)
3,744

 
(938
)
 
18,182

 
1,765

Total water revenues
95,249

 
87,689

 
248,112

 
228,834

 
 
 
 
 
 
 
 
Electric:
 
 
 
 
 
 
 
Tariff-based revenues
9,729

 
8,207

 
28,693

 
26,021

Surcharges (cost-recovery activities)
51

 
62

 
148

 
172

Electric revenues from contracts with customers
9,780

 
8,269

 
28,841

 
26,193

BRRAM under (over)-collection (alternative revenue program)
2,216

 
(394
)
 
1,192

 
(645
)
Total electric revenues
11,996

 
7,875

 
30,033

 
25,548

 
 
 
 
 
 
 
 
Contracted services:
 
 
 
 
 
 
 
Water
13,797

 
16,909

 
41,772

 
44,134

Wastewater
13,454

 
11,709

 
40,959

 
27,295

Contracted services revenues from contracts with customers
27,251

 
28,618

 
82,731

 
71,429

 
 
 
 
 
 
 
 
Total revenues
$
134,496

 
$
124,182

 
$
360,876

 
$
325,811


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)
 
September 30, 2019
 
January 1, 2019
 
 
 
 
 
Receivable from the U.S. government
 
$
60,277

 
$
61,126

Contract assets
 
$
28,701

 
$
24,447

Contract liabilities
 
$
12,689

 
$
7,530