Reportable Segments and Geographic Information (Details 1) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	$ 584,372	$ 596,324	$ 1,623,224	$ 1,863,226
Long-lived assets	586,305		586,305		$ 590,723
United States
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	508,092	547,937	1,464,590	1,720,440
Long-lived assets	566,467		566,467		571,045
International
Revenues from External Customers and Long-Lived Assets [Line Items]
Net revenues	76,280	$ 48,387	158,634	$ 142,786
Long-lived assets	$ 19,838		$ 19,838		$ 19,678