Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended			6 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
OPERATING REVENUE
Operating revenues	$ 2,014,000		$ 2,052,000	$ 4,060,000	$ 4,139,000
OPERATING EXPENSES
Cost of services and products (exclusive of depreciation and amortization)	919,000		980,000	1,886,000	1,978,000
Selling, general and administrative	347,000		388,000	675,000	732,000
Operating expenses - affiliates	87,000		55,000	133,000	108,000
Depreciation and amortization	389,000		433,000	779,000	864,000
Goodwill impairment	0	$ 3,700,000	0	3,708,000	0
Total operating expenses	1,742,000		1,856,000	7,181,000	3,682,000
OPERATING INCOME (LOSS)	272,000		196,000	(3,121,000)	457,000
OTHER (EXPENSE) INCOME
Interest income - affiliate	16,000		16,000	32,000	32,000
Interest expense	(130,000)		(124,000)	(261,000)	(244,000)
Other income (expense), net	3,000		(4,000)	15,000	3,000
Total other (expense), net	(111,000)		(112,000)	(214,000)	(209,000)
INCOME (LOSS) BEFORE INCOME TAXES	161,000		84,000	(3,335,000)	248,000
Income tax expense	51,000		44,000	140,000	146,000
NET INCOME (LOSS)	110,000		40,000	(3,475,000)	102,000
Non-Affiliate Revenue
OPERATING REVENUE
Operating revenues	1,976,000		2,025,000	3,967,000	4,087,000
Affiliate Revenues
OPERATING REVENUE
Operating revenues	$ 38,000		$ 27,000	$ 93,000	$ 52,000