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Borrowings - Convertible Debentures - Additional Information (Details) - Convergys - 5.75% Junior Subordinated Convertible Debentures due September 2029 - USD ($) $ in Thousands |  | 9 Months Ended
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Oct. 05, 2018 | Aug. 31, 2019
Debt Instrument [Line Items] |  |
Aggregate principal amount of debentures | $ 124,963 |
Debenture interest rate percentage | 5.75% |
Debt Instrument, Maturity date | 2029-09 |
Principal amount of the convertible debentures settled |  | $ 69,258
Amount of convertible debentures settled |  | $ 148,023

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