Amount of amortization expense attributable to debt issuance costs.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount, before accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation.

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Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset, expected to be settled after one year or the normal operating cycle, if longer. Includes assets not subject to a master netting arrangement and not elected to be offset.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of acquisition of long-lived, physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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OTHER ASSETS (Narrative) (Details) - USD ($) $ in Thousands		3 Months Ended
OTHER ASSETS (Narrative) (Details) - USD ($) $ in Thousands	Jan. 15, 2020	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019	Sep. 19, 2019
Derivative Asset, Noncurrent		$ 924		$ 597
Debt issue costs		2,879		2,675
Interest expense, debt		2,269	$ 1,209
Impairment losses recognized		0	0
Revolving Credit Facility [Member]
Debt issuance costs, gross		500
Interest expense, debt		1,300
Unamortized debt issue costs		$ 2,900		$ 2,700
Debt instrument, term		3 years
Borrowing capacity		$ 175,000
Amortization expense		200
Revolving Credit Facility [Member] \| Facility Amount [Member] \| Subsidiaries [Member]
Borrowing capacity					$ 125,000
Revolving Credit Facility [Member] \| Committed Amount [Member]
Borrowing capacity		$ 120,000			$ 100,000
Land improvements
Property, Plant and Equipment, Useful Life		15 years
Land investment	$ 5,900
Depreciation		$ 0	$ 0
Property, Plant and Equipment, Additions	$ 5,900