Balance Sheet Components (Schedule of Noncurrent Other Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Non-Current Other Liabilities [Line Items]
Non current other liabilities	$ 19,508	$ 18,466
Current other liabilities	34,098	3,678
Provisions and Contingencies [Member]
Non-Current Other Liabilities [Line Items]
Non current other liabilities	12,591	16,791
Current other liabilities	5,992
Provisions and Contingencies [Member] | Buenos Aires [Member]
Non-Current Other Liabilities [Line Items]
Non current other liabilities	6,778
Current other liabilities	5,992
Other Liabilities	12,770
Deferred payments related to sales tax	10,889	10,889
Contingent Considerations and Escrows from Acquisitions [Member]
Non-Current Other Liabilities [Line Items]
Non current other liabilities	4,942	1,161
Current other liabilities	1,124	611
Other [Member]
Non-Current Other Liabilities [Line Items]
Non current other liabilities	$ 1,975	$ 514