Backlog - Schedule of Reconciliation of Backlog Representing Signed Contracts (Details) $ in Thousands |
3 Months Ended |
|---|---|
|
Mar. 31, 2018
USD ($)
| |
| Balance | $ 244,645 |
| Contract amount gross | 287,077 |
| Less contract revenues earned | (81,114) |
| Balance | 205,963 |
| New Contracts and Adjustments [Member] | |
| Contract amount gross | $ 42,432 |
| X | ||||||||||
- Definition Contract amount gross. No definition available.
|
| X | ||||||||||
- Definition Less contract revenues earned. No definition available.
|
| X | ||||||||||
- 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
|
| X | ||||||||||
- Details
|