Details Of Certain Accounts - Other Current Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Contract assets (Note 10)	$ 443	$ 740
Prepaids	11,001	12,635
Deferred costs (Note 10)	25,774	28,340
Income tax receivable	18,927	1,261
Other receivable	28,541	0
Other	7,132	7,474
Total other current assets	$ 91,818	$ 50,450