DEBT (Outstanding Debt Balances) (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Debt, Carrying Value	$ 245,532,000	$ 201,816,000
Debt Instrument, Interest Rate, Effective Percentage	4.10%	4.80%
Asset Related Debt [Member]
Debt Instrument [Line Items]
Debt, Carrying Value	$ 23,357,000	$ 3,500,000
Debt Instrument, Interest Rate, Effective Percentage	2.80%	5.00%
Other Debt [Member]
Debt Instrument [Line Items]
Debt, Carrying Value	$ 222,175,000	$ 198,316,000
Debt Instrument, Interest Rate, Effective Percentage	4.20%	4.80%
NonBond Related Notes Payable and Other Debt [Member] \| Asset Related Debt [Member]
Debt Instrument [Line Items]
Debt, Due within one year	$ 0	$ 650,000
Debt, Due after one year	$ 0	$ 2,850,000
Debt Instrument, Interest Rate, Effective Percentage, Current Portion	0.00%	5.00%
Debt Instrument, Interest Rate, Effective Percentage, Noncurrent Portion	0.00%	5.00%
Notes Payable and Other Debt [Member] \| Other Debt [Member]
Debt Instrument [Line Items]
Debt, Due within one year	$ 4,429,000	$ 6,828,000
Debt, Due after one year	$ 13,383,000	$ 1,500,000
Debt Instrument, Interest Rate, Effective Percentage, Current Portion	14.20%	14.70%
Debt Instrument, Interest Rate, Effective Percentage, Noncurrent Portion	5.20%	5.00%
Unamortized debt issue costs	$ 100,000	$ 100,000
Bond Related Notes Payable and Other Debt [Member] \| Asset Related Debt [Member]
Debt Instrument [Line Items]
Debt, Due within one year	275,000	0
Debt, Due after one year	$ 23,082,000	0
Debt Instrument, Interest Rate, Effective Percentage, Current Portion	2.80%
Debt Instrument, Interest Rate, Effective Percentage, Noncurrent Portion	2.80%
Unamortized debt issue costs	$ 200,000
Subordinated Loan [Member]
Debt Instrument [Line Items]
Net Premium and Debt Issuance Costs	7,200,000	7,400,000
Subordinated Loan [Member] \| Other Debt [Member]
Debt Instrument [Line Items]
Debt, Due within one year	2,219,000	2,212,000
Debt, Due after one year	$ 92,144,000	$ 93,276,000
Debt Instrument, Interest Rate, Effective Percentage, Current Portion	2.20%	3.20%
Debt Instrument, Interest Rate, Effective Percentage, Noncurrent Portion	2.20%	3.20%
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Debt, Carrying Value	$ 110,000,000.0
Debt Instrument, Interest Rate, Effective Percentage	5.50%
Unamortized debt issue costs	$ 2,600,000	$ 2,700,000
Revolving Credit Facility [Member] \| Other Debt [Member]
Debt Instrument [Line Items]
Debt, Due within one year	0	0
Debt, Due after one year	$ 110,000,000	$ 94,500,000
Debt Instrument, Interest Rate, Effective Percentage, Current Portion	0.00%
Debt Instrument, Interest Rate, Effective Percentage, Noncurrent Portion	5.50%	5.60%

Debt Instrument, Interest Rate, Effective Percentage, Current Portion

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Debt Instrument, Interest Rate, Effective Percentage, Noncurrent Portion

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Amount of net premiums and debt issuance costs as of the balance sheet date.

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Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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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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