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Revenue Recognition (Tables) | 12 Months Ended
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Dec. 31, 2021
Revenue from Contract with Customer [Abstract] |
Disaggregation of Revenue | The following table summarizes disaggregated revenue information by geographic area based on the customer's country of domicile (in thousands):
|  | Year Ended December 31,
|  | 2021 |  | 2020 |  | 2019 |  |
Americas |  | $ | 435,220 |  |  | $ | 310,027 |  |  | 277,155 |  |  |
Europe |  | 247,744 |  |  | 208,787 |  |  | 227,738 |  |  |
Greater China |  | 200,135 |  |  | 168,287 |  |  | 115,061 |  |  |
Other Asia |  | 153,999 |  |  | 123,919 |  |  | 105,671 |  |  |
|  | $ | 1,037,098 |  |  | $ | 811,020 |  |  | $ | 725,625 |  |  |
The following table summarizes disaggregated revenue information by revenue type (in thousands):
|  | Year Ended December 31,
|  | 2021 |  | 2020 |  | 2019
Standard products and services |  | $ | 889,253 |  |  | $ | 674,830 |  |  | $ | 629,220 |
Application-specific customer solutions |  | 147,845 |  |  | 136,190 |  |  | 96,405 |
|  | $ | 1,037,098 |  |  | $ | 811,020 |  |  | $ | 725,625 |
Contract with Customer, Liability | The following table summarizes the deferred revenue and customer deposits activity (in thousands):
| Amount
Balance as of December 31, 2019 | $ | 14,432 |
Deferral of revenue billed in the current period, net of recognition | 19,014 |
Recognition of revenue deferred in prior period | (12,443) |
Foreign exchange rate changes | 271 |
Balance as of December 31, 2020 | 21,274 |
Deferral of revenue billed in the current period, net of recognition | 31,907 |
Recognition of revenue deferred in prior period | (17,403) |
Foreign exchange rate changes | (35) |
Balance as of December 31, 2021 | $ | 35,743 |
Allowance for Credit Loss | The following table summarizes changes in the allowance for credit losses (in thousands):
| Amount
Balance as of December 31, 2019 | $ | 530 |
Increases to the allowance for credit losses | 600 |
Write-offs, net of recoveries | (300) |
Foreign exchange rate changes | 1 |
Balance as of December 31, 2020 | 831 |
Increases to the allowance for credit losses | — |
Write-offs, net of recoveries | (55) |
Foreign exchange rate changes | — |
Balance as of December 31, 2021 | $ | 776 |

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- Definition Tabular disclosure of allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 20 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=124255953&loc=SL82919249-210447 + Details
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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=123351226&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=123351226&loc=SL49130545-203045 + Details
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