Revenues (Schedule of Changes in Deferred Revenue) (Details) - USD ($) $ in Thousands |
Jun. 30, 2020 |
Dec. 31, 2019 |
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| Revenue Recognition [Abstract] | ||||
| Deferred revenues | [1] | $ 62,106 | $ 68,307 | |
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| X | ||||||||||
- Definition Amount of deferred income and obligation to transfer product and service to customer for which consideration has been received or is receivable. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- References No definition available.
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