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Summary of Significant Accounting policies - Equity Method Investments (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Equity Method Investments |  |  |
Costs of sales | $ 71,546 | $ 67,632 | $ 85,646
Investment In Promon A |  |  |
Equity Method Investments |  |  |
Ownership percentage | 17.00% |  |
Impairment of investments | $ 0 | 0 | $ 0
Accounts Payable and Accrued Liabilities | Investment In Promon A |  |  |
Equity Method Investments |  |  |
Costs and Expenses | 1,500 | 2,200 |
Cost of goods | Investment In Promon A |  |  |
Equity Method Investments |  |  |
Costs and Expenses | $ 4,000 | $ 2,500 |

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- Definition The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -URI http://asc.fasb.org/extlink&oid=6472922&loc=d3e499488-122856 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2(a),(d)) -URI http://asc.fasb.org/extlink&oid=123367319&loc=SL114868664-224227 + Details
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