Basis of Financial Reporting Text Block (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Text Block [Abstract]
Operating Leases, Future Minimum Payments Due	$ 200,300		$ 213,200
Share-based Compensation	$ 22,362	$ 11,593