Commitments - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
Dec. 31, 2013	Sep. 30, 2013	Jun. 28, 2011
Commitments [Line Items]
Purchase which is not recorded on Company's Balance Sheet	$ 621
Lease Term	November 2011 through December 2018.
Leasehold improvement liability	423	445	613
Unamortized balance of lease	$ 423

Amount of the recorded obligation to transfer funds in the future for fixed or minimum amounts or quantities of goods or services at fixed or minimum prices (for example, as in take-or-pay contracts or throughput contracts).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 440

-SubTopic 10

-Section 50

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=6394976&loc=d3e25383-109308

Name:	us-gaap_RecordedUnconditionalPurchaseObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant