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Deferred Revenue and Remaining Performance Obligations (Tables)
6 Months Ended
Jun. 30, 2022
Revenue from Contract with Customer [Abstract]  
Deferred Revenue and Income Summary A summary of the balances as of June 30, 2022 and December 31, 2021 follows (in thousands):
June 30,December 31,
20222021
Products and services not yet delivered$335 $451