Amendment to DISH Agreement (Details) (USD $)	1 Months Ended	12 Months Ended
	Aug. 31, 2012	Mar. 31, 2013	Sep. 30, 2012 Installment
Amendment to Agreement [Line Items]
Common stock issued to DISH Network		$ 13,237,000
DISH SARs
Amendment to Agreement [Line Items]
Strike price of canceled SAR (per SAR)			$ 15.48
Number of annual installments of cancelled SAR			3
SARs granted per installment of cancelled SAR			200,000
Cash payment for cancelled SAR and past services	5,800,000
Shares issued for cancelled SAR and past services	700,000
Common stock issued to DISH Network	13,200,000
Stock-based compensation expense		15,900,000
Selling, general and administrative expenses | DISH SARs
Amendment to Agreement [Line Items]
Stock-based compensation expense		$ 15,900,000