Receivables, net

Receivables, net at September 30, 2014, December 31, 2013 and September 30, 2013 are as follows:



(in thousands)	September 30, 2014		December 31, 2013		September 30, 2013
Construction and Large Project Construction contracts:
Completed and in progress	$	274,203	$	193,538	$	275,182
Retentions	79,475		73,103		76,114
Total construction contracts	353,678		266,641		351,296
Construction Material sales	54,718		36,813		55,466
Other	9,740		12,657		18,412
Total gross receivables	418,136		316,111		425,174
Less: allowance for doubtful accounts	508		2,513		2,565
Total net receivables	$	417,628	$	313,598	$	422,609

Receivables include amounts billed and billable to clients for services provided and/or according to contract terms as of the end of the applicable period and do not bear interest. Certain contracts include provisions that permit us to submit invoices in advance of providing services, based on the passage of time, achievement of milestones or upon completion of the project and, to the extent not collected, are included in receivables. To the extent the related costs have not been billed, the contract balance is included in costs and estimated earnings in excess of billings on the condensed consolidated balance sheets. Included in other receivables at September 30, 2014, December 31, 2013 and September 30, 2013 were items such as notes receivable, fuel tax refunds and income tax refunds. No such receivables individually exceeded 10% of total net receivables at any of these dates.

Financed receivables consisted of long-term notes receivable and retentions receivable. Long-term notes receivable were not material at any of the presented dates. No retention receivable individually exceeded 10% of total net receivables at any of the presented dates. As of September 30, 2014, the majority of the retentions receivable is expected to be collected within one year.

We segregate our retention receivables into two categories: escrow and non-escrow. The balances in each category were as follows:



(in thousands)	September 30, 2014		December 31, 2013		September 30, 2013
Escrow	$	26,128	$	25,124	$	23,794
Non-escrow	53,347		47,979		52,320
Total retention receivables	$	79,475	$	73,103	$	76,114

The escrow receivables include amounts due to Granite which have been deposited into an escrow account and bear interest. Typically, escrow retention receivables are held until work on a project is complete and has been accepted by the owner who then releases those funds, along with accrued interest, to us. There is minimal risk of not collecting on these amounts.

As of September 30, 2014, the non-escrow retention receivables aged over 90 days have not materially changed since December 31, 2013. In addition, our allowance for doubtful accounts contained no material provision related to non-escrow retention receivables as we determined there were no significant collectability issues at any of the presented dates.