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Market Concentrations (Tables)

12 Months Ended

Dec. 31, 2012

Schedule of revenues concentration from major customers

Total gross revenues by customer for each customer representing 10% or more of consolidated gross revenues are summarized below for the years ended December 31:



	2012	2011	2010

Customer 1	35%	36%	35%
Customer 2	30%	28%	31%
Customer 3	28%	31%	26%

- Definition

Tabular disclosure of the nature of a concentration, a benchmark to which it is compared, and the percentage that the risk is to the benchmark.

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