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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) (Unaudited) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020 | Mar. 19, 2014
Amortization of Intangible Assets | $ 320 | $ 328 |
Convertible Subordinated Notes [Member] |  |  |
Stated interest rate percentage |  |  | 2.75%
Senior Notes [Member] | Senior Note Two [Member] |  |  |
Stated interest rate percentage | 6.625% |  |

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