Segment Information Balance Sheet Data (Details) $ in Thousands	9 Months Ended
	Sep. 30, 2017 USD ($) segment	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Operating Segments | segment	4
Total Assets	$ 6,133,010	$ 4,865,022
Entertainment Reportable Operating Segment [Member]
Segment Reporting Information [Line Items]
Total Assets	2,343,778	2,168,669
Education Reportable Operating Segment [Member]
Segment Reporting Information [Line Items]
Total Assets	1,489,459	1,308,288
Recreation Reportable Operating Segment [Member]
Segment Reporting Information [Line Items]
Total Assets	2,057,172	1,120,498
Other Reportable Operating Segment [Member]
Segment Reporting Information [Line Items]
Total Assets	193,766	202,394
Corporate / Unallocated
Segment Reporting Information [Line Items]
Total Assets	$ 48,835	$ 65,173