Concentrations

6 Months Ended

Jun. 30, 2013

Accounts Receivable and revenue concentrations [Abstract]

Accounts receivable and revenue concentrations

2. Concentrations

Three customers accounted for 81% of gross accounts receivable at June 30, 2013. Customer #1 accounted for 13%, Customer #2 accounted for 14% and Customer #3 accounted for 54%, respectively. Two customers accounted for 81% of gross accounts receivable at June 30, 2012. Customer #2 accounted for 24% and Customer #3 accounted for 57%, respectively.

Two customers accounted for 27% of total revenue for the three months ended June 30, 2013. Customer #1 accounted for 13% and Customer #2 accounted for 14%. Two customers accounted for 49% of total revenue for the three months ended June 30, 2012. Customer #3 accounted for 33% and Customer #4 accounted for 16%.

Two customers accounted for 28% of total revenue for the six months ended June 30, 2013. Each customer accounted for 14% of total revenue. Two customers accounted for 22% of total revenue for the six months ended June 30, 2012. Customer #4 accounted for 7% and Customer #3 accounted for 15% of total revenue.