Quarterly report pursuant to Section 13 or 15(d)

Backlog - Schedule of Reconciliation of Backlog Representing Signed Contracts (Details)

v3.10.0.1
Backlog - Schedule of Reconciliation of Backlog Representing Signed Contracts (Details)
$ in Thousands
3 Months Ended
Jun. 30, 2018
USD ($)
Balance $ 205,963
Contract amount gross 215,405
Less contract revenues earned (83,295)
Balance 132,110
New Contracts and Adjustments [Member]  
Contract amount gross $ 9,442