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Schedule of Changes in Contract Liabilities (Details)
$ in Thousands
6 Months Ended
Jun. 30, 2021
USD ($)
Revenue from Contract with Customer [Abstract]  
Unearned revenue January 1, 2021 $ 1,132
Unearned billings 2,581
Revenue recognized (2,060)
Unearned revenue June 30, 2021 $ 1,653