Quarterly report pursuant to Section 13 or 15(d)

Customer Concentrations and Accounts Receivable (Details)

v2.4.0.6
Customer Concentrations and Accounts Receivable (Details)
3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended
Sep. 30, 2011
Revenue
Customer concentrations
BPC
Sep. 30, 2012
Revenue
Customer concentrations
BPC
Sep. 30, 2011
Revenue
Customer concentrations
BPC
Sep. 30, 2012
Revenue
Customer concentrations
Horizon
Sep. 30, 2011
Revenue
Customer concentrations
Horizon
Sep. 30, 2012
Revenue
Customer concentrations
Horizon
Sep. 30, 2011
Revenue
Customer concentrations
Horizon
Sep. 30, 2012
Net accounts receivable
Credit concentration
BPC
Mar. 31, 2012
Net accounts receivable
Credit concentration
BPC
Sep. 30, 2012
Net accounts receivable
Credit concentration
Horizon
Customer Concentrations and Accounts Receivable                    
Concentration percentage 25.00% 14.00% 23.00% 32.00% 22.00% 33.00% 15.00% 43.00% 44.00% 12.00%