Commitments and Contingencies (Detail) (USD $) In Millions, except Share data in Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2014	Sep. 30, 2013
Commitments and Contingencies Disclosure [Abstract]
Operating Leases, Rent Expense (in Dollars)	$ 1.3us-gaap_LeaseAndRentalExpense	$ 1.0us-gaap_LeaseAndRentalExpense
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	201

Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line.

No definition available.

Name:	us-gaap_LeaseAndRentalExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration