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Construction Contracts
9 Months Ended
Sep. 30, 2023
Contractors [Abstract]  
Construction Contracts Construction Contracts
Construction contract costs and estimated earnings in excess of billings represent reimbursable costs and amounts earned under contracts in progress as of the balance sheet date. Such amounts become billable according to contract terms, which usually consider the passage of time, achievement of certain milestones, or completion of the project. The Company expects to bill and collect substantially all construction contract costs and estimated earnings in excess of billings as of September 30, 2023 during the next 12 to 24 months.  
 
Billings in excess of construction contract costs and estimated earnings represent billings or collections on contracts made in advance of revenue recognized.

The following table summarizes the changes to the balances in the Company’s construction contract costs and estimated earnings in excess of billings account and the billings in excess of construction contract costs and estimated earnings account for the nine months ended September 30, 2023 and 2022 (in thousands):
Nine Months Ended 
September 30, 2023
Nine Months Ended 
September 30, 2022
Construction contract costs and estimated earnings in excess of billingsBillings in excess of construction contract costs and estimated earningsConstruction contract costs and estimated earnings in excess of billingsBillings in excess of construction contract costs and estimated earnings
Beginning balance$342 $17,515 $243 $4,881 
Revenue recognized that was included in the balance at the beginning of the period— (17,515)— (4,881)
Increases due to new billings, excluding amounts recognized as revenue during the period— 24,570 — 16,312 
Transferred to receivables(342)— (478)— 
Construction contract costs and estimated earnings not billed during the period440 — 232 — 
Changes due to cumulative catch-up adjustment arising from changes in the estimate of the stage of completion— (1,443)235 (576)
Ending balance$440 $23,127 $232 $15,736 

The Company defers pre-contract costs when such costs are directly associated with specific anticipated contracts and their recovery is probable. Pre-contract costs of $1.9 million and $1.3 million were deferred as of September 30, 2023 and December 31, 2022, respectively. Amortization of pre-contract costs for the nine months ended September 30, 2023 and 2022 was $0.3 million and $0.8 million, respectively.
 
Construction receivables and payables include retentions, which are amounts that are generally withheld until the completion of the contract or the satisfaction of certain restrictive conditions such as fulfillment guarantees. As of September 30, 2023 and December 31, 2022, construction receivables included retentions of $25.4 million and $8.3 million, respectively. The Company expects to collect substantially all construction receivables outstanding as of September 30, 2023 during the next 12 to 24 months. As of September 30, 2023 and December 31, 2022, construction payables included retentions of $33.5 million and $24.7 million, respectively. The Company expects to pay substantially all construction payables outstanding as of September 30, 2023 during the next 12 to 24 months.
The Company’s net position on uncompleted construction contracts comprised the following as of September 30, 2023 and December 31, 2022 (in thousands):
 September 30, 2023December 31, 2022
Costs incurred on uncompleted construction contracts$595,195 $571,465 
Estimated earnings21,997 22,162 
Billings(639,879)(610,800)
Net position$(22,687)$(17,173)
Construction contract costs and estimated earnings in excess of billings$440 $342 
Billings in excess of construction contract costs and estimated earnings(23,127)(17,515)
Net position$(22,687)$(17,173)
The above table reflects the net effect of projects closed as of September 30, 2023 and December 31, 2022, respectively.

The Company’s balances and changes in construction contract price allocated to unsatisfied performance obligations (backlog) as of September 30, 2023 and 2022 were as follows (in thousands):
 Three Months Ended September 30,Nine Months Ended September 30,
 2023202220232022
Beginning backlog$592,787 $541,214 $665,564 $215,518 
New contracts/change orders20,646 53,966 135,414 449,712 
Work performed(99,855)(69,251)(287,400)(139,301)
Ending backlog$513,578 $525,929 $513,578 $525,929 

The Company expects to complete a majority of the uncompleted contracts in place as of September 30, 2023 during the next 12 to 24 months.