Other Balance Sheet Items (Other Current Assets) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Balance Sheet Related Disclosures [Abstract]
Prepaid registry fees, current	$ 22,578	$ 21,717
Estimated contingent consideration receivable	0	14,721
Prepaid expenses	22,032	19,818
Accounts Receivable, Net	6,356	1,524
Other Assets, Miscellaneous, Current	4,801	2,750
Other Assets, Current	$ 55,767	$ 60,530

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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