Debt - Borrowing Information (Details)	6 Months Ended
	Mar. 31, 2013
Greater than or equal to $60,000
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Description	Greater than or equal to $60,000
Debt Instrument, Description of Variable Rate Basis	LIBOR plus 3.00% or Base Rate plus 1.00%
Line of Credit Facility, Interest Rate Description	3.00% plus 0.25% fronting fee
Greater than $40,000 and less than $60,000
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Description	Greater than $40,000 and less than $60,000
Debt Instrument, Description of Variable Rate Basis	LIBOR plus 3.25% or Base Rate plus 1.25%
Line of Credit Facility, Interest Rate Description	3.25% plus 0.25% fronting fee
Less than or equal to $40,000
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Description	Less than or equal to $40,000
Debt Instrument, Description of Variable Rate Basis	LIBOR plus 3.50% or Base Rate plus 1.50%
Line of Credit Facility, Interest Rate Description	3.50% plus 0.25% fronting fee