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Note Receivable and Customers' Advances for Construction (Tables)
12 Months Ended
Dec. 31, 2021
Note Receivable and Customers' Advances for Construction [Abstract]  
Amounts Related to Water District Projects
Included in the accompanying balance sheets at December 31, 2021 and 2020 were the following amounts related to this project.

 
2021
   
2020
 
Note receivable, including interest
 
$
255
   
$
255
 
Customers’ advances for construction
   
284
     
302