Income Taxes (Details 2) (USD $) In Thousands, unless otherwise specified	3 Months Ended								12 Months Ended
	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010	Sep. 30, 2012	Sep. 30, 2011
Income Tax Provision Accompanying Consolidated Statements of Operation
Consolidated income from continuing operations before income tax provision	$ 1,669	$ 3,302	$ 2,696	$ 1,733	$ 3,500	$ 2,879	$ 3,002	$ 1,857	$ 9,400	$ 11,238
Less-U.S. state and local income tax provision									465	401
Income before U.S. and non-U.S. federal income tax provision									8,935	10,837
Income tax provision at U.S. federal statutory rates									3,038	3,693
Tax effect of:
Domestic production activities deduction									(278)	(275)
Undistributed earnings of non-U.S. subsidiaries									(91)	132
State and local income taxes									425	401
Federal tax credits									(330)	(289)
Other									88	127
Income tax provision	$ 472	$ 861	$ 972	$ 547	$ 1,316	$ 815	$ 1,007	$ 651	$ 2,852	$ 3,789