Contract Assets and Liabilities - Schedule of Asset and Liabilities (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Dec. 31, 2019
Contract with Customer, Asset, after Allowance for Credit Loss, Current [Abstract]
Costs and estimated earnings in excess of billings	$ 15,968	$ 15,968	$ 19,256
Retainage	3,765	3,765	1,385
Total contract assets	19,733	19,733	20,641
Contract with Customer, Liability [Abstract]
Deferred revenue	465	465	505
Billings in excess of costs and estimated earnings	14,490	14,490	77
Total contract liabilities	14,955	14,955	$ 582
Revenue recognized	$ 163	$ 423