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Contract Assets and Liabilities (Tables) | 12 Months Ended
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Dec. 31, 2020
Contractors [Abstract] |
Schedule of contract Assets and Liabilities From Contracts with Customers | Contract assets consisted of the following at December 31:
(in thousands) |  | 2020 |  | 2019 |  | Change
Unbilled revenue |  | $ | 97,543 |  |  | $ | 126,087 |  |  | $ | (28,544) |
Contract retainages, net |  | 88,260 |  |  | 91,022 |  |  | (2,762) |
Contract assets |  | $ | 185,803 |  |  | $ | 217,109 |  |  | $ | (31,306) |
Contract liabilities consisted of the following at December 31:
(in thousands) |  | 2020 |  | 2019 |  | Change
Deferred revenue |  | $ | 155,570 |  |  | $ | 102,673 |  |  | $ | 52,897 |
Accrued loss provision |  | 2,826 |  |  | 2,813 |  |  | 13 |
Contract liabilities |  | $ | 158,396 |  |  | $ | 105,486 |  |  | $ | 52,910 |
The following table provides information about contract assets and contract liabilities from contracts with customers:
(in thousands) |  | 2020 |  | 2019 |  | Change
Contract assets |  | $ | 185,803 |  |  | $ | 217,109 |  |  | $ | (31,306) |
Contract liabilities |  | (158,396) |  |  | (105,486) |  |  | (52,910) |
Net contract assets (liabilities) |  | $ | 27,407 |  |  | $ | 111,623 |  |  | $ | (84,216) |
Schedule of Net Asset Position for Contracts in Process | The net asset position for contracts in process consisted of the following at December 31:
(in thousands) |  | 2020 |  | 2019
Costs and estimated earnings on uncompleted contracts |  | $ | 3,921,376 |  |  | $ | 3,532,886 |
Less: billings to date |  | 3,979,403 |  |  | 3,509,472 |
|  | $ | (58,027) |  |  | $ | 23,414 |
The net asset position for contracts in process is included within the contract asset and contract liability in the accompanying consolidated balance sheets as follows at December 31:
(in thousands) |  | 2020 |  | 2019
Unbilled revenue |  | $ | 97,543 |  |  | $ | 126,087 |
Deferred revenue |  | (155,570) |  |  | (102,673) |
|  | $ | (58,027) |  |  | $ | 23,414 |

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- Definition Tabular disclosure of receivable, contract asset, and contract liability from contract with customer. Includes, but is not limited to, change in contract asset and contract liability. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=121604090&loc=SL49130551-203045 + Details
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- Definition Tabular disclosure of long-term contract or program. + References No definition available. + Details
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