Note 18 – Revenue Sources and Concentration of Sales

The following table sets forth the Company's sales resulting from various revenue sources for the periods indicated below:


	Year Ended December 31,
	2011		2010		2009
New railcar sales	$	444,810	$	112,413	$	217,046
Used railcar sales		2,772		7,849		818
Parts sales		10,610		12,423		17,406
Leasing revenues		5,468		5,384		5,812
Maintenance, repair and rebuild revenues		22,643		4,648		3,446
Other sales		683		172		3,934

	$	486,986	$	142,889	$	248,462

Due to the nature of its operations, the Company is subject to significant concentration of risks related to business with a few customers. Sales to the Company's top three customers each accounted for 52%, 24% and 5%, respectively, of revenues for the year ended December 31, 2011 and $4.6 million of the Company's accounts receivable at December 31, 2011 was due from one customer. Sales to the Company's top three customers accounted for 63%, 10% and 5%, respectively, of revenues for the year ended December 31, 2010. Sales to the Company's top three customers accounted for 15%, 15% and 14%, respectively, of revenues for the year ended December 31, 2009.

The Company's sales to customers outside the United States were $24,343, $19,641 and $9,550 in 2011, 2010 and 2009, respectively.