Details Of Certain Accounts - Other Non-Current Liabilities (Details) - USD ($) $ in Thousands	1 Months Ended
	Jan. 31, 2016	Jun. 30, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investee losses in excess of investment (Note 5)		$ 9,817	$ 10,238
Deferred gain on sale of property		5,862	5,761
Deferred revenue		8,910	8,598
Derivative liability (Note 14)		13,809	20,191
Other		8,528	8,197
Total other non-current liabilities		$ 46,926	$ 52,985
Term of lease agreement	15 years