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Revenue (Tables) | 3 Months Ended
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Mar. 31, 2022
Revenue. |
Schedule of revenue by discipline | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended
​ | ​ | March 31,
​ | ​ | 2022 | ​ | 2021
​ | ​ | (in thousands)
Systems | ​ | $ | 151,801 | ​ | $ | 80,991
Aftermarket | ​ | ​ | 51,794 | ​ | ​ | 51,785
Total Revenue | ​ | $ | 203,595 | ​ | $ | 132,776
Schedule of revenue by geographic markets | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended
​ | ​ | March 31,
​ | ​ | 2022 | ​ | 2021
​ | ​ | (in thousands)
North America | ​ | $ | 24,913 | ​ | $ | 9,508
Asia Pacific | ​ | ​ | 149,240 | ​ | ​ | 103,391
Europe | ​ | ​ | 29,442 | ​ | ​ | 19,877
Total Revenue | ​ | $ | 203,595 | ​ | $ | 132,776
Schedule of Contract liabilities | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | March 31, | ​ | December 31,
​ | ​ | 2022 | ​ | 2021
​ | ​ | (in thousands)
Contract liabilities | ​ | $ | 74,840 | ​ | $ | 68,436
​ | ​ | ​ | ​ | ​ | ​ | ​
​ Contract liabilities are reflected as deferred revenue on the consolidated balance sheet and relate to payments invoiced or received in advance of completion of performance obligations under a contract. Contract liabilities are recognized as revenue upon the fulfillment of performance obligations. ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended
​ | ​ | March 31,
​ | ​ | 2022 | ​ | 2021
​ | ​ | (in thousands)
Balance, beginning of the period | ​ | $ | 68,436 | ​ | $ | 23,058
Deferral of revenue | ​ | ​ | 23,394 | ​ | ​ | 11,264
Recognition of deferred revenue | ​ | ​ | (16,990) | ​ | ​ | (12,180)
Balance, end of the period | ​ | $ | 74,840 | ​ | $ | 22,142

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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 revenue from external customers by geographic areas attributed to the entity's country of domicile and to foreign countries from which the entity derives revenue. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 41 -Subparagraph a -URI http://asc.fasb.org/extlink&oid=123359005&loc=d3e9038-108599 + Details
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