Description of Business and Significant Accounting Policies - Additional Paid In Capital (Provident Shares Held In Escrow) (Details) (Provident Group Asset Acquisition [Member], USD $) In Millions, except Share data, unless otherwise specified	1 Months Ended	12 Months Ended			13 Months Ended
	Sep. 30, 2010	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2011	Sep. 30, 2011
Provident Group Asset Acquisition [Member]
Accounting Policies [Abstract]
Business Combination, Consideration Transferred				$ 5.0
Business Combination, Cost of Acquired Entity, Equity Interest Issued or Issuable, Total Shares Purchased and Placed In Escrow					214,325
Business Combination, Cost of Acquired Entity, Equity Interest Issued or Issuable, Period From Date of Closing Over Which Shares Will be Released from Escrow	5 years
Business Combination, Cost of Acquired Entity, Equity Interest Issued or Issuable, Shares Released from Escrow		0	6,799