Business Segments (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($) segment	Jun. 30, 2015 USD ($)
Segment Reporting [Abstract]
Number of reportable segments | segment			1
Net income	$ 80,100	$ 84,614	$ 33,165	$ 14,288
Interest expense, net	20,190	18,938	39,648	37,525
Income tax expense (benefit)	41,059	26,859	17,199	(8,770)
Depreciation and amortization	25,924	25,582	51,952	52,377
Corporate expenses	13,648	9,030	27,692	23,442
Stock-based Compensation Expense	4,244	4,408	6,250	26,715
Loss on disposal of assets	597	1,567	114	2,233
Gains (Losses) on Extinguishment of Debt	(2,377)	(6,557)	(2,377)	(6,557)
Other (income) expense, net	(8)	(407)	691	(479)
Park EBITDA	$ 188,131	$ 177,148	$ 179,088	$ 153,888