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Intangible Assets and Liabilities (Tables)
 9 Months Ended
Sep. 30, 2022
Intangible Assets, Net (Excluding Goodwill) [Abstract]  
Schedule of Intangible Assets by Major Class
The gross carrying amount and accumulated amortization (accretion) of our intangible assets and liabilities, other than goodwill, were as follows:
September 30, 2022December 31, 2021
In thousandsGrossAccumulated
(Amortization) Accretion		NetGrossAccumulated
(Amortization) Accretion		Net
Intangible Assets
Core-developed technology$491,898 $(484,225)$7,673 $505,429 $(491,047)$14,382 
Customer contracts and relationships307,838 (247,555)60,283 336,421 (261,043)75,378 
Trademarks and trade names69,562 (67,416)2,146 74,551 (72,133)2,418 
Other12,011 (11,767)244 12,021 (11,670)351 
Total intangible assets
$881,309 $(810,963)$70,346 $928,422 $(835,893)$92,529 
Intangible Liabilities
Customer contracts and relationships$(23,900)$23,785 $(115)$(23,900)$23,441 $(459)
Summary of Intangible Asset Account Activity
A summary of intangible assets and liabilities activity is as follows:
Nine Months Ended September 30,
In thousands20222021
Intangible assets, gross beginning balance$928,422 $1,000,037 
Effect of change in exchange rates(47,113)(21,109)
Intangible assets, gross ending balance$881,309 $978,928 
Intangible liabilities, gross beginning balance$(23,900)$(23,900)
Effect of change in exchange rates— — 
Intangible liabilities, gross ending balance$(23,900)$(23,900)
Schedule of Intangible Assets, Future Amortization Expense
Estimated future annual amortization (accretion) is as follows:
Year Ending December 31,AmortizationAccretionEstimated Annual Amortization, net
In thousands
2022 (amount remaining at September 30, 2022)$6,457 $(115)$6,342 
202318,616 — 18,616 
202414,748 — 14,748 
202514,080 — 14,080 
202610,160 — 10,160 
Thereafter6,285 — 6,285 
Total intangible assets subject to amortization (accretion)$70,346 $(115)$70,231