Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
REVENUES	$ 472,641	$ 490,294	$ 963,742	$ 974,358
EXPENSES:
Operating	352,927	345,679	715,242	691,511
General and administrative	30,145	33,364	61,424	62,809
Depreciation and amortization	38,619	35,591	76,571	71,114
Asset impairments	11,717	4,706	12,253	4,706
Costs and Expenses, Total	433,408	419,340	865,490	830,140
OPERATING INCOME	39,233	70,954	98,252	144,218
OTHER (INCOME) EXPENSE:
Interest expense, net	20,996	20,662	43,534	42,098
Other (income) expense	(2,987)	(258)	(3,520)	(254)
Total non-operating expense (income)	18,009	20,404	40,014	41,844
INCOME BEFORE INCOME TAXES	21,224	50,550	58,238	102,374
Income tax benefit (expense)	962	(1,972)	(2,814)	(4,456)
NET INCOME	22,186	48,578	55,424	97,918
Net income attributable to non-controlling interest			(1,181)
NET INCOME ATTRIBUTABLE TO COMMON STOCKHOLDERS	$ 22,186	$ 48,578	$ 54,243	$ 97,918
BASIC EARNINGS PER SHARE	$ 0.19	$ 0.41	$ 0.45	$ 0.82
DILUTED EARNINGS PER SHARE	$ 0.18	$ 0.41	$ 0.45	$ 0.82