Fair Value Measures (Detail) - Assets and Liabilities measured at fair value on a recurring basis (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015	Sep. 30, 2014
Assets:
Money Market funds	$ 507us-gaap_MoneyMarketFundsAtCarryingValue	$ 1,006us-gaap_MoneyMarketFundsAtCarryingValue
Total assets measured at fair value	507	1,006
Level 1
Assets:
Money Market funds	507	1,006
Total assets measured at fair value	$ 507	$ 1,006

Investment in short-term money-market instruments (such as commercial paper, banker's acceptances, repurchase agreements, government securities, certificates of deposit, and so forth) which are highly liquid (that is, readily convertible to known amounts of cash) and so near their maturity that they present an insignificant risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify as cash equivalents by definition. Original maturity means an original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three-years ago does not become a cash equivalent when its remaining maturity is three months.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Cash Equivalents

-URI http://asc.fasb.org/extlink&oid=6507016

Name:	us-gaap_MoneyMarketFundsAtCarryingValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant