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Revenue Recognition (Tables)
6 Months Ended
Jun. 30, 2021
Revenues [Abstract]  
Contract with Customer, Asset and Liability
A summary of significant net changes in the contract assets and the contract liabilities balances during the period is as follows:
In thousandsContract Liabilities, Less Contract Assets
Beginning balance, January 1, 2021$98,388 
Revenues recognized from beginning contract liability(78,600)
Cumulative catch-up adjustments10,169 
Increases due to amounts collected or due161,728 
Revenues recognized from current period increases(59,962)
Other(141)
Ending balance, June 30, 2021$131,582