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v3.21.2

Long‑Term Debt - Schedule of Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Debt Instrument [Line Items] |  |  |  |
Amortization and write-off of deferred debt issuance costs |  |  | $ 4,160 | $ 430
Other obligations | $ 64 | $ 15 | 97 | 40
Interest expense | 3,861 | 1,975 | 8,844 | 4,821
Interest Rate Swap |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest rate swap | 325 | 288 | 942 | 398
Revolving Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest expense for debt | 911 | 1,519 | 2,490 | 3,953
Amortization and write-off of deferred debt issuance costs | 253 | 153 | 1,049 | 430
Interest expense and amortization of debt issuance costs | 1,489 | 1,960 | 4,481 | 4,781
2026 Notes: | Convertible Debt |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest expense for debt | 221 | 0 | 592 | 0
Amortization and write-off of deferred debt issuance costs | 909 | 0 | 2,470 | 0
Interest expense and amortization of debt issuance costs | 1,130 | 0 | 3,062 | 0
2027 Notes: | Convertible Debt |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Interest expense for debt | 551 | 0 | 563 | 0
Amortization and write-off of deferred debt issuance costs | 627 | 0 | 641 | 0
Interest expense and amortization of debt issuance costs | $ 1,178 | $ 0 | $ 1,204 | $ 0
Credit Facility |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Weighted average interest rate over time | 2.33% | 1.59% | 2.02% | 1.92%

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- Definition Amount of amortization expense attributable to debt issuance costs. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3602-108585 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(8)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=119993939&loc=d3e28555-108399 + Details
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