Details Of Certain Accounts - Other Non-Current Liabilities (Details) - USD ($) $ in Thousands	1 Months Ended
	Jan. 31, 2016	Mar. 31, 2017	Dec. 31, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Investee losses in excess of investment (Note 5)		$ 10,390	$ 10,238
Deferred gain on sale of property		5,751	5,761
Deferred revenue		8,802	8,598
Derivative liability (Note 14)		17,352	20,191
Other		7,647	8,197
Total other non-current liabilities		$ 49,942	$ 52,985
Term of lease agreement	15 years