Quarterly report pursuant to Section 13 or 15(d)

Accounts Receivable - Schedule of Accounts Receivable (Details)

v3.10.0.1
Accounts Receivable - Schedule of Accounts Receivable (Details) - USD ($)
$ in Thousands
Jun. 30, 2018
Dec. 31, 2017
Receivables [Abstract]    
Uncompleted contracts $ 39,848 $ 39,612
Completed contracts 6,992 8,555
Accounts receivable 5,899 4,510
Unbilled receivable 20,624 10,077
Allowance for doubtful accounts (670) (555)
Accounts receivable, net $ 72,693 $ 62,199