Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
REVENUES	$ 491,101	$ 484,064
EXPENSES:
Operating	362,315	345,832
General and administrative	31,279	29,445
Depreciation and amortization	37,952	35,523
Asset impairments	536
Costs and Expenses, Total	432,082	410,800
OPERATING INCOME	59,019	73,264
OTHER (INCOME) EXPENSE:
Interest expense, net	22,538	21,436
Other (income) expense	(533)	4
Total non-operating expense (income)	22,005	21,440
INCOME BEFORE INCOME TAXES	37,014	51,824
Income tax expense	(3,776)	(2,484)
NET INCOME	33,238	49,340
Net income attributable to non-controlling interest	(1,181)
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS	$ 32,057	$ 49,340
BASIC EARNINGS PER SHARE	$ 0.27	$ 0.42
DILUTED EARNINGS PER SHARE	$ 0.27	$ 0.41