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OTHER INCOME AND EXPENSES (Tables)
 12 Months Ended
Dec. 31, 2016
Other Income and Expenses [Abstract]  
Schedule of various non-regulated activities
The Company conducts various non-regulated activities as reflected in the table below:
 
2016
 
2015
 
2014
 
Revenue
 
Expense
 
Revenue
 
Expense
 
Revenue
 
Expense
Operating and maintenance
$
8,430

 
$
9,061

 
$
9,385

 
$
10,438

 
$
9,748

 
$
10,256

Leases
1,923

 
204

 
1,929

 
208

 
2,029

 
208

Design and construction
1,792

 
1,473

 
1,399

 
1,292

 
1,258

 
1,102

Meter reading and billing
242

 
62

 
597

 
434

 
803

 
615

Interest income
18

 


 
39

 
—

 
186

 
—

Change in value of life insurance contracts (gain) loss


 
(1,026
)
 
—

 
218

 
—

 
(994
)
Other non-regulated income and expenses
4,180

 
1,671

 
2,275

 
1,454

 
3,294

 
3,098

Total
$
16,585

 
$
11,445

 
$
15,624

 
$
14,044

 
$
17,318

 
$
14,285