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Revenue from Contracts with Customers | 12 Months Ended
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Dec. 31, 2020
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue [Table Text Block] | A summary by the Company’s reportable segments follows for the years ended December 31:
Twelve months ended December 31, 2020 | U.S. Operations |  | Swiss Operations |  | Western European Operations |  | Chinese Operations |  | Other Operations |  | Total
Product Revenue | $ | 815,046 |  |  | $ | 112,542 |  |  | $ | 509,385 |  |  | $ | 526,231 |  |  | $ | 441,968 |  |  | $ | 2,405,172 |
Service Revenue: |  |  |  |  |  |  |  |  |  |  |
Point in time | 199,247 |  |  | 22,733 |  |  | 135,793 |  |  | 39,705 |  |  | 110,542 |  |  | 508,020 |
Over time | 58,026 |  |  | 8,648 |  |  | 71,537 |  |  | 12,674 |  |  | 21,100 |  |  | 171,985 |
Total | $ | 1,072,319 |  |  | $ | 143,923 |  |  | $ | 716,715 |  |  | $ | 578,610 |  |  | $ | 573,610 |  |  | $ | 3,085,177 |
Twelve months ended December 31, 2019 | U.S. Operations |  | Swiss Operations |  | Western European Operations |  | Chinese Operations |  | Other Operations |  | Total
Product Revenue | $ | 801,181 |  |  | $ | 110,390 |  |  | $ | 500,978 |  |  | $ | 495,579 |  |  | $ | 438,717 |  |  | $ | 2,346,845 |
Service Revenue: |  |  |  |  |  |  |  |  |  |  |
Point in time | 207,707 |  |  | 20,968 |  |  | 135,612 |  |  | 37,370 |  |  | 109,802 |  |  | 511,459 |
Over time | 48,227 |  |  | 8,141 |  |  | 64,151 |  |  | 11,767 |  |  | 18,062 |  |  | 150,348 |
Total | $ | 1,057,115 |  |  | $ | 139,499 |  |  | $ | 700,741 |  |  | $ | 544,716 |  |  | $ | 566,581 |  |  | $ | 3,008,652 |
Twelve months ended December 31, 2018 | U.S. Operations |  | Swiss Operations |  | Western European Operations |  | Chinese Operations |  | Other Operations |  | Total
Product Revenue | $ | 769,971 |  |  | $ | 106,400 |  |  | $ | 517,855 |  |  | $ | 475,025 |  |  | $ | 430,824 |  |  | $ | 2,300,075 |
Service Revenue: |  |  |  |  |  |  |  |  |  |  |
Point in time | 196,314 |  |  | 19,430 |  |  | 134,052 |  |  | 38,528 |  |  | 100,638 |  |  | 488,962 |
Over time | 41,512 |  |  | 8,234 |  |  | 66,881 |  |  | 11,556 |  |  | 18,366 |  |  | 146,549 |
Total | $ | 1,007,797 |  |  | $ | 134,064 |  |  | $ | 718,788 |  |  | $ | 525,109 |  |  | $ | 549,828 |  |  | $ | 2,935,586 |
The Company's global revenue mix by product category for the year ending December 31, 2020 is laboratory (54% of sales), industrial (40% of sales), and retail (6% of sales). The Company’s product revenue by reportable segment is proportionately similar to the Company’s global mix with the exception of the Company’s Swiss Operations, which is largely comprised of laboratory products, and the Company’s Chinese Operations, which has a slightly higher percentage of industrial products. A breakdown of the Company’s sales by product category for the year ended December 31 follows:
| 2020 |  | 2019 |  | 2018
Laboratory | $ | 1,669,791 |  |  | $ | 1,578,625 |  |  | $ | 1,504,600 |
Industrial | 1,224,497 |  |  | 1,233,970 |  |  | 1,211,362 |
Retail | 190,889 |  |  | 196,057 |  |  | 219,624 |
Total net sales | $ | 3,085,177 |  |  | $ | 3,008,652 |  |  | $ | 2,935,586 |
A breakdown of net sales to external customers by geographic customer destination, net for the year ended December 31 follows:
| 2020 |  | 2019 |  | 2018
Americas | $ | 1,180,626 |  |  | $ | 1,165,847 |  |  | $ | 1,105,956 |
Europe | 921,266 |  |  | 892,092 |  |  | 908,773 |
Asia/Rest of World | 983,285 |  |  | 950,713 |  |  | 920,857 |
Total | $ | 3,085,177 |  |  | $ | 3,008,652 |  |  | $ | 2,935,586 |
Contract with Customer, Asset and Liability [Table Text Block] |
|  | 2020 |  | 2019 |  | 2018
Beginning balances as of January 1 |  | $ | 122,489 |  |  | $ | 105,381 |  |  | $ | 107,166 |
Customer pre-payments/deferred revenue |  | 617,643 |  |  | 633,190 |  |  | 619,257 |
Revenue recognized |  | (595,802) |  |  | (615,957) |  |  | (618,002) |
Foreign currency translation |  | 4,776 |  |  | (125) |  |  | (3,040) |
Ending balance as of December 31 |  | $ | 149,106 |  |  | $ | 122,489 |  |  | $ | 105,381 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130545-203045 + Details
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