Income Taxes - Additional Information (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Income Taxes [Line Items]
Deferred tax assets operating loss carry forwards totaling	$ 734	$ 765
Undistributed earnings	14,000
Deferred tax liabilities	1,000
Amount unrecognized tax that affect income tax rate if recognized	208	471
Decrease in tax provision for interest and penalties	72	18
Payment of interest and penalties, accrued	$ 30	$ 102
Uncertain tax positions expected to be paid or settled	12 months
Internal Revenue Service (IRS) [Member]
Income Taxes [Line Items]
Years under Federal return examination	2010 and 2012
Domestic [Member]
Income Taxes [Line Items]
Open Tax Years	2010
Fiscal year with IRS examination completed	2011
Foreign [Member]
Income Taxes [Line Items]
Open Tax Years	2008 and forward