Accounts Receivable (Tables)

12 Months Ended

Dec. 31, 2019

Accounts Receivable [Abstract]

Net Accounts Receivable

	December 31,
		2019		2018
Billed utility revenue	$	69,205	$	68,347
Other		5,285		4,392
		74,490		72,739
Less allowance for doubtful accounts		7,353		6,914
Net accounts receivable	$	67,137	$	65,825

Allowance For Doubtful Accounts

	2019		2018		2017
Balance at January 1,	$	6,914	$	7,071	$	7,095
Amounts charged to expense		5,306		5,305		4,986
Accounts written off		(5,980)		(6,587)		(6,135)
Recoveries of accounts written off		1,113		1,125		1,125
Balance at December 31,	$	7,353	$	6,914	$	7,071