Basis of Presentation - Shipping Expense (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Shipping expenses	$ 0.2	$ 0.1	$ 0.5	$ 0.4