Backlog - Schedule of Reconciliation of Backlog Representing Signed Contracts (Details) $ in Thousands |
12 Months Ended |
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Dec. 31, 2017
USD ($)
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| Balance | |
| Contract amount gross | 509,603 |
| Less contract revenues earned | (264,958) |
| Balance | 244,645 |
| New Contracts and Adjustments [Member] | |
| Contract amount gross | $ 509,603 |
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- Definition Contract amount gross. No definition available.
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- Definition Less contract revenues earned. No definition available.
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- Definition Amount, after accumulated amortization and accumulated impairment loss, of asset recognized from cost incurred to obtain or fulfill contract with customer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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