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Contract Assets
6 Months Ended
Jun. 30, 2018
Contract With Customer Asset And Liability [Abstract]  
Contract assets

Note 8Contract Assets

As of June 30, 2018 and December 31, 2017, the Company had $148.2 million and $146.5 million in contract receivables from contracts with customers. The contract receivables primarily relate to the Company’s right to consideration for work completed but not billed at the reporting date. The contract receivables are transferred to accounts receivable when the rights become unconditional.

Significant changes in the contract asset balance during the period are as follows:

Six Months Ended
June 30,
(in thousands)20182017
Transferred to receivables from contract assets recognized at
the beginning of the period$(290,599)$(305,850)
Contract assets recognized, net of reclassification to accounts receivable292,334302,384
Net change$1,735$(3,466)