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Basis of Presentation - Schedule of Supplemental Cash Flow Information (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2021 | Jun. 30, 2022 | Jun. 30, 2021
SUPPLEMENTAL CASH FLOW INFORMATION: |  |  |
Interest paid |  | $ 3,938 | $ 4,000
Income taxes paid, including foreign withholding taxes |  | 4,363 | 4,793
Non-cash investing and financing activities: |  |  |
Dividend payable | $ 10,741 | 10,380 | 10,794
Accrued debt issuance costs |  | 1,233 | 0
Right-of-use assets obtained in exchange of operating lease liabilities |  | 417 | 0
Non-cash acquisition of patents | $ 30,100 | 30,100 | 0
Non-cash distribution of patents |  | 1,928 | 0
Accrued capitalized patent costs and property and equipment purchases |  | $ 3,634 | $ 3,561

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