Annual report pursuant to Section 13 and 15(d)

Construction Contract and Other Service Revenues (Details 1)

v3.10.0.1
Construction Contract and Other Service Revenues (Details 1) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Disaggregation of Revenue [Line Items]      
Construction contract and other service revenues $ 60,859 $ 102,840 $ 48,364
Construction      
Disaggregation of Revenue [Line Items]      
Construction contract and other service revenues 57,986 94,471 46,989
Design      
Disaggregation of Revenue [Line Items]      
Construction contract and other service revenues 1,931 7,338 451
Other      
Disaggregation of Revenue [Line Items]      
Construction contract and other service revenues 942 1,031 924
GMP      
Disaggregation of Revenue [Line Items]      
Construction contract and other service revenues 34,050 78,401 22,405
FFP      
Disaggregation of Revenue [Line Items]      
Construction contract and other service revenues 20,327 22,607 24,571
Cost-plus fee      
Disaggregation of Revenue [Line Items]      
Construction contract and other service revenues 5,540 801 464
Other      
Disaggregation of Revenue [Line Items]      
Construction contract and other service revenues $ 942 $ 1,031 $ 924