Represents the number of facilities taken under operating lease.

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Represents the revenue received in exchange for handling the system and system improvements under operating leases.

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No definition available.

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Amount before accumulated depreciation of leased physical assets used in the normal conduct of business to produce goods and services.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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No definition available.

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Amount of minimum lease payments for capital leases due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of minimum lease payments for capital leases due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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This element represents the payments that the lessee is obligated to make or can be required to make in connection with a property under the terms of an agreement classified as an operating lease, excluding contingent rentals and a guarantee by the lessee of the lessor's debt and the lessee's obligation to pay (apart from the rental payments) executory costs such as insurance, maintenance, and taxes.

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Rental expense for the reporting period incurred under operating leases, including minimum and any contingent rent expense, net of related sublease income.

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The cash outflow for acquisition of or capital improvements to properties held for investment (operating, managed, leased) or for use.

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Minimum amount of purchase arrangement maturing after the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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Minimum amount of purchase arrangement maturing in the fifth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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Minimum amount of purchase arrangement maturing in the fourth fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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Minimum amount of purchase arrangement maturing in the second fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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Minimum amount of purchase arrangement maturing in the third fiscal year following the latest fiscal year. Includes, but not limited to, recorded and unrecorded purchase obligations, long-term purchase commitments, and short-term purchase commitments.

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The amount of an asset, typically cash, provided to a counterparty to provide certain assurance of performance by the entity pursuant to the terms of a written or oral agreement, such as a lease.

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COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands	12 Months Ended
COMMITMENTS AND CONTINGENCIES (Details) $ in Thousands	Dec. 31, 2018 USD ($) system lease	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2011 USD ($)
Capital Lease Obligations
2019	$ 1,477
2020	1,170
2021	1,170
2022	1,170
2023	1,170
Thereafter	3,217
Water Contracts
Water Supply Contracts
2019	31,082
2020	31,083
2021	31,083
2022	31,084
2023	31,085
Thereafter	520,518
Facility Leases
Lease Commitments
2019	926
2020	864
2021	640
2022	510
2023	416
Thereafter	2,722
Other lease commitment disclosures
Annual lease payments made and charged	$ 1,200	$ 1,100	$ 1,000
System Lease
Lease Commitments
Number of water systems leased \| system	2
2019	$ 845
2020	845
2021	845
2022	845
2023	845
Thereafter	$ 7,816
Hawthorne Lease
Lease Commitments
Number of water systems leased \| lease	2
Other lease commitment disclosures
Annual lease payments made and charged				$ 1,000
Lease term				15 years
Lease deposit				$ 8,100
Revenue from the water system received in exchange for handling of system and system improvements	$ 10,100	10,000	8,500
Annual payments made under capital improvements	1,200	1,100	1,000
Capital lease asset	$ 5,800
Hawthorne Lease \| Minimum
Other lease commitment disclosures
Annual lease payments made and charged				$ 900
Commerce
Other lease commitment disclosures
Lease term	15 years
Annual lease payment	$ 800
Revenue from the water system received in exchange for handling of system and system improvements	$ 3,000	$ 3,400	$ 2,500