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Detail Of Selected Balance Sheet Accounts (Activity In Product Warranty Accrual) (Details) (USD $)
In Thousands, unless otherwise specified
3 Months Ended 9 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Detail Of Selected Balance Sheet Accounts [Abstract]        
Balance at beginning of period $ 5,242 $ 4,783 $ 5,714 $ 4,603
Increase to warranty expense 430 752 1,965 2,084
Deduction for warranty charges (874) (1,068) (2,798) (2,254)
Increase (decrease) due to foreign currency translations (7) (40) (90) (6)
Balance at end of period $ 4,791 $ 4,427 $ 4,791 $ 4,427