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Income Taxes (Details 2) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Income Tax Provision Accompanying Consolidated Statements of Operation    
Income before income tax provision $ 13,846 $ 9,168
Less-U.S. state and local income tax provision 489 514
Income before U.S. and non-U.S. federal income tax provision 13,357 8,654
Income tax provision at U.S. federal statutory rates 4,675 2,942
Tax effect of:    
Permanent items (436) (213)
Undistributed earnings of non-U.S. subsidiaries (60) (185)
State and local income taxes 453 498
Federal tax credits (766) (272)
Change in valuation allowance 139 127
Other 83 (36)
Income tax provision $ 4,088 $ 2,861