Correction of Immaterial Errors (Details Textual) (USD $) In Millions, unless otherwise specified	102 Months Ended	3 Months Ended		6 Months Ended	3 Months Ended			9 Months Ended
	Jun. 30, 2014 Additional Stock Based Compensation Expense	Jun. 30, 2014 Net Income	Mar. 31, 2014 Net Income	Jun. 30, 2014 Net Income	Sep. 30, 2013 Net Income Maximum	Jun. 30, 2013 Net Income Maximum	Mar. 31, 2013 Net Income Maximum	Sep. 30, 2013 Net Income Maximum
Quantifying Misstatement In Current Year Financial Statements [Line Items]
Non-cash adjustment	$ 3.3	$ 0.2	$ 0.2	$ 0.4	$ 0.1	$ 0.1	$ 0.1	$ 0.1