Construction Contracts - Summary of Costs in Excess of Billings and Billings in Excess of Costs (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Construction contract costs and estimated earnings in excess of billings
Beginning balance	$ 243	$ 138
Transferred to receivables	(361)	(464)
Construction contract costs and estimated earnings not billed during the period	493	85
Changes due to cumulative catch-up adjustment arising from changes in the estimate of the stage of completion	118	326
Ending balance	493	85
Billings in excess of construction contract costs and estimated earnings
Beginning balance	4,881	6,088
Revenue recognized that was included in the balance at the beginning of the period	(4,881)	(6,088)
Increases due to new billings, excluding amounts recognized as revenue during the period	15,442	4,191
Changes due to cumulative catch-up adjustment arising from changes in the estimate of the stage of completion	(367)	(54)
Ending balance	$ 15,075	$ 4,137