Allowance for Doubtful Accounts (Details) - USD ($)	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 14, 2022	Feb. 02, 2022	Jan. 26, 2022
Changes in allowance for doubtful accounts
Balance at beginning of year	$ 3,569,000	$ 5,316,000	$ 916,000
Provision charged to expense	2,842,000	8,150,000	5,016,000
Accounts written off, net of recoveries	1,971,000	9,897,000	616,000
Balance at end of year	4,440,000	3,569,000	5,316,000
Components of allowance for doubtful accounts
Allowance for doubtful accounts related to accounts receivable-customer	4,387,000	3,516,000	5,263,000
Allowance for doubtful accounts related to other accounts receivable	53,000	53,000	53,000
Total allowance for doubtful accounts	4,440,000	3,569,000	5,316,000
GSWC
Changes in allowance for doubtful accounts
Balance at beginning of year	3,221,000	4,960,000	916,000
Provision charged to expense	2,501,000	7,732,000	4,703,000
Provision for Doubtful Accounts transfer to BVESI	0	0	(79,000)
Accounts written off, net of recoveries	1,526,000	9,471,000	580,000
Balance at end of year	4,196,000	3,221,000	4,960,000
Components of allowance for doubtful accounts
Allowance for doubtful accounts related to accounts receivable-customer	4,143,000	3,168,000	4,907,000
Allowance for doubtful accounts related to other accounts receivable	53,000	53,000	53,000
Total allowance for doubtful accounts	4,196,000	$ 3,221,000	$ 4,960,000
Relief funding	9,500,000
Total relief funding	9,500,000
BVESI
Components of allowance for doubtful accounts
Approval amount for the relief funding	473,000
Relief funding				$ 152,000	$ 321,000	$ 9,500,000
Total relief funding	$ 473,000