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Nature of Operations and Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Accounting Policies [Abstract] |
Schedule of estimated useful lives | Depreciation is computed primarily over the following periods:
| Useful Life
| in Years
Buildings | 25 - 40
Machinery and equipment | 5 - 10
Buildings improvements | 5 - 10
Computer equipment and software | 3 - 5
Office equipment, furniture and fixtures | 5 - 14
Schedule of useful lives of intangible assets | Intangible assets and their useful lives are as follows:
| Weighted Average
| Useful Life (in Years)
Developed technology | 6
Patents | 10
Trade names | 9
Customer relationships | 7
Schedule of changes in deferred revenues relating to warranty commitments | The Company's deferred revenues as of December 31, 2018 and 2017 were as follows:
|  | December 31, |  | December 31,
|  | 2018 |  | 2017
|  | U.S. $ in thousands
Deferred revenue* |  | 72,387 |  | 68,108
*Includes $18.4 million and $15.2 million under long term deferred revenue in the Company's consolidated balance sheets as of December 31, 2018 and December 31, 2017, respectively.

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- Definition Tabular disclosure of the estimated useful life of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software. + References No definition available. + Details
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- Definition Tabular disclosure of the type of arrangements and the corresponding amounts that comprise the current and noncurrent balance of deferred revenue as of the balance sheet date. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section 45 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=82887183&loc=d3e6935-107765 + Details
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- Definition Tabular disclosure of amortization expense of assets, excluding financial assets, that lack physical substance, having a limited useful life. + References No definition available. + Details
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