Discontinued Operations - USD ($)	3 Months Ended			6 Months Ended		9 Months Ended	12 Months Ended
	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Sep. 30, 2020	Mar. 31, 2022	Dec. 31, 2020
Disposal Group, Including Discontinued Operation, Classified Balance Sheet Disclosures [Abstract]
Discontinued operations - total assets			$ 16,400,000		$ 16,400,000
Discontinued Operation, Income Statement Disclosures [Abstract]
Loss from discontinued operations, net of tax	$ 0		$ 280,000	$ 0	$ (498,000)
Loss from discontinued operations per share of common stock
Basic (in dollars per share)	$ 0		$ 0.01	$ 0	$ (0.01)
Diluted (in dollars per share)	$ 0		$ 0.01	$ 0	$ (0.01)
Gill Ranch [Member] | Discontinued Operations, Held-for-sale or Disposed of by Sale [Member]
Disposal Group, Including Discontinued Operation, Classified Balance Sheet Disclosures [Abstract]
Accounts receivable			$ 1,621,000		$ 1,621,000
Inventories			821,000		821,000
Other current assets			250,000		250,000
Property, plant, and equipment			13,328,000		13,328,000
Operating lease right of use asset			118,000		118,000
Other non-current assets			254,000		254,000
Discontinued operations - total assets	$ 0		16,392,000	$ 0	16,392,000
Accounts payable			999,000		999,000
Other current liabilities			1,119,000		1,119,000
Operating lease liabilities			112,000		112,000
Other non-current liabilities			11,344,000		11,344,000
Total discontinued operations liabilities		$ 0	13,574,000		13,574,000			$ 0
Gill Ranch [Member] | Discontinued Operations, Held-for-sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses		$ 13,500,000				$ 1,000,000.0
Discontinued Operation, Income Statement Disclosures [Abstract]
Revenues			3,374,000		4,282,000
Operations and maintenance			2,604,000		4,184,000
General taxes			53,000		100,000
Depreciation and amortization			106,000		212,000
Other expenses and interest			228,000		459,000
Total expenses			2,991,000		4,955,000
Loss from discontinued operations before income tax			383,000		(673,000)
Income tax benefit			103,000		(175,000)
Loss from discontinued operations, net of tax			$ 280,000		$ (498,000)
Loss from discontinued operations per share of common stock
Basic (in dollars per share)	$ 0		$ 0.01	$ 0	$ (0.01)
Diluted (in dollars per share)	$ 0		$ 0.01	$ 0	$ (0.01)
Discontinued Operation, Gain (Loss) on Disposal of Discontinued Operation, Net of Tax								$ 5,900,000
Gill Ranch [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Percent ownership	75.00%			75.00%
Forecast [Member] | Maximum [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from divestiture of businesses							$ 15,000,000.0