Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
REVENUES	$ 447,385	$ 426,000
EXPENSES:
Operating	313,918	300,662
General and administrative	26,480	26,872
Depreciation and amortization	42,059	28,685
Asset impairments		955
Costs and Expenses, Total	382,457	357,174
OPERATING INCOME	64,928	68,826
OTHER (INCOME) EXPENSE:
Interest expense, net	17,544	10,190
Other income	(83)	(26)
Total non-operating expense (income)	17,461	10,164
INCOME BEFORE INCOME TAXES	47,467	58,662
Income tax expense	(1,160)	(1,385)
NET INCOME	$ 46,307	$ 57,277
BASIC EARNINGS PER SHARE	$ 0.39	$ 0.49
DILUTED EARNINGS PER SHARE	0.39	0.49
REGULAR DIVIDENDS DECLARED PER SHARE	$ 0.54	$ 0.54