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Revenue (Tables)
9 Months Ended
Sep. 30, 2020
Revenue from Contract with Customer [Abstract]  
Schedule of Changes in Contract Assets and Contract Liabilities
The following table reflects the changes in our contract assets and contract liabilities balances for the nine months ended September 30, 2020 (in thousands):
September 30, 2020December 31, 2019Increase / (Decrease)
$%
Accrued revenue$1,617 $1,260 
Costs and estimated profits in excess of billings6,340 4,104 
Contract assets$7,957 $5,364 $2,593 48 %
Deferred revenue$5,495 $4,877 
Billings in excess of costs and profits recognized169 5,911 
Contract liabilities$5,664 $10,788 $(5,124)(47)%