CONTRACT

12 Months Ended

Dec. 31, 2011

Contract Receivable

CONTRACT

3. CONTRACTS RECEIVABLE

Amounts due on contracts as of December 31 were as follows (in thousands):

	2011		2010
Completed contracts
Current receivables	$	11,521	$	2,458
Long term receivables due after one year		625		—
Contracts in progress:
Current receivables		60,977		10,632
Retainage due within one year		4,313		11,000
		77,436		24,090
Less allowance for doubtful accounts		24		48
	$	77,412	$	24,042

Contract Costs

CONTRACT

12. CONTRACT COSTS

We define material, freight, equipment rental and sub-contractor services included in the direct costs of revenue associated with projects as pass-through costs. Since we use the percentage-of-completion accounting method to recognize revenue on construction contracts, by using a direct labor efforts expended method, pass-through costs have little or no impact in the determination of gross margin for a particular pay period. Pass-through costs included in revenue were 45.3%, 36.1% and 36.6% for the years ended December 31, 2011, 2010 and 2009, respectively.