Notes Receivable and Customers' Advances for Construction (Tables)

12 Months Ended

Dec. 31, 2017

Notes Receivable and Customers' Advances for Construction [Abstract]

Amounts Related to Water District Projects

Included in the accompanying balance sheets at December 31, 2017 and 2016 were the following amounts related to this project.

	2017		2016
Notes receivable, including interest	$	255	$	255
Customers' advances for construction		306		307