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Borrowings (U.S. Corporate Office Term Loan) (Narrative) (Details) - USD ($) $ in Thousands |  |  | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Jun. 26, 2017 | Dec. 13, 2016 | Sep. 30, 2021 | Dec. 31, 2020
Debt Instrument [Line Items] |  |  |  |
Contractual facility |  |  | $ 269,953 | $ 300,449
U.S. Corporate Office Term Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Debt instrument term |  | 10 years |  |
Contractual facility |  | $ 8,400 | $ 9,000 | $ 9,186
Interest rate | 4.44% | 4.64% |  |
Debt increase | $ 1,500 |  |  |

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- Definition Net increase or decrease in the carrying amount of the debt instrument for the period. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(f)) -URI http://asc.fasb.org/extlink&oid=120395691&loc=d3e23780-122690 + Details
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- Details
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