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Summary of Significant Accounting Policies (Tables) | 12 Months Ended
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Dec. 31, 2018
Accounting Policies [Abstract] |
Schedule of Deferred Revenue and Customer Advances by Arrangement | A rollforward of the Company’s deferred revenue and customer advances is as follows:
|  | Year Ended December 31, 2018 |
Beginning balance, January 1(1) |  | $ | 27,800 |
Amount of deferred revenue and customer advances recognized in income(3) |  |  | (83,497 | )
Additions to deferred revenue and customer advances |  |  | 73,171 |
Ending balance, December 31(2) |  | $ | 17,474 |
(1) | Beginning deferred revenue and customer advances as of January 1, 2018 included $12,842 of current deferred revenue, $3,126 of long-term deferred revenue and $13,352 of current customer advances, net of a $1,520 adjustment related to the adoption of ASC 606.
(2) | Ending deferred revenue and customer advances as of December 31, 2018 included $8,134 of current deferred revenue, $3,228 of long-term deferred revenue and $6,112 of current customer advances.
(3) | The deferred revenue and customers advances recognized in income that relates to fiscal year 2018 was $61,012.
Summary of Revenue from Contracts with Customers | The following table summarizes revenue from contracts with customers:
|  | Year Ended December 31, 2018 |
|  | Vacuum & Analysis |  |  | Light & Motion |  |  | Total |
Net revenues: |  |  |  |  |  |  |  |  |  |  |  |
Products |  | $ | 1,080,343 |  |  | $ | 754,859 |  |  | $ | 1,835,202 |
Services |  |  | 180,519 |  |  |  | 59,387 |  |  |  | 239,906 |
Total net revenues |  | $ | 1,260,862 |  |  | $ | 814,246 |  |  | $ | 2,075,108 |
|  | Year Ended December 31, 2017 |
|  | Vacuum & Analysis |  |  | Light & Motion |  |  | Total |
Net revenues: |  |  |  |  |  |  |  |  |  |  |  |
Products |  | $ | 1,047,639 |  |  | $ | 653,662 |  |  | $ | 1,701,301 |
Services |  |  | 159,818 |  |  |  | 54,858 |  |  |  | 214,676 |
Total net revenues |  | $ | 1,207,457 |  |  | $ | 708,520 |  |  | $ | 1,915,977 |
|  | Year Ended December 31, 2016 |
|  | Vacuum & Analysis |  |  | Light & Motion |  |  | Total |
Net revenues: |  |  |  |  |  |  |  |  |  |  |  |
Products |  | $ | 731,364 |  |  | $ | 387,215 |  |  | $ | 1,118,579 |
Services |  |  | 140,927 |  |  |  | 35,836 |  |  |  | 176,763 |
Total net revenues |  | $ | 872,291 |  |  | $ | 423,051 |  |  | $ | 1,295,342 |

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