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Supplemental Cash Flow Information
 12 Months Ended
Dec. 31, 2022
Supplemental Cash Flow Elements [Abstract]  
Supplemental Cash Flow Information Supplemental Cash Flow Information
Non-cash investing and financing activities were as follows (in thousands):
Year ended December 31,
2022
2021 (1)
2020 (1)
Non-cash investing activity:
Property and equipment, accrued but unpaid$150 $50 $3,154 
Right-of-use assets acquired in exchange for operating lease obligations$4,130 $9,850 $31,148 
Exchange of corporate debt securities (2)
$— $— $18,326 
Disposition of Investment in Consensus(3)
$112,286 $— $— 
Non-cash financing activity:
Debt principal settled in exchange for Investment in Consensus(3)
$112,286 $— $— 
Debt principal settled in exchange for Consensus senior notes due 2028$— $485,000 $— 
Conversion shares issued as extinguishment cost to redeem 3.25% Convertible Notes
$— $431,952 $— 
Reacquisition of 3.25% Convertible Notes, net of tax
$— $390,526 $— 
(1)Combines continuing and discontinued operations.
(2)During the year ended December 31, 2020, the Company exchanged shares of redeemable preferred stock that were previously classified as available-for-sale corporate debt securities for a new series of preferred stock, classified as equity securities without a readily determinable fair value. Refer to Note 5 - Investments for additional details.
(3)During the year ended December 31, 2022, the Company disposed $160.1 million of its Investment in Consensus in exchange for $112.3 million of debt and recorded $47.8 million of loss on investment, net.
Supplemental data (in thousands):
Year ended December 31,
202220212020
Interest paid$36,168 $54,479 $105,962 
Income taxes paid, net of refunds$59,543 $61,162 $45,046 
 Operating cash outflows related to lease liabilities were as follows (in thousands):
Year ended December 31,
202220212020
Operating cash outflows related to lease liabilities$26,921 $27,798 $27,402