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Note 9 - Pension and Retirement Plans (Detail) - Fair value of the assets held by the UK pension plan by asset category (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Sep. 30, 2011
Plan assets fair value $ 8,914 $ 7,598
Cash on Deposit [Member] | Fair Value, Inputs, Level 1 [Member]
   
Plan assets fair value 392 375
Cash on Deposit [Member]
   
Plan assets fair value 392 375
Pooled Funds [Member] | Fair Value, Inputs, Level 2 [Member]
   
Plan assets fair value 8,522 7,223
Pooled Funds [Member]
   
Plan assets fair value 8,522 7,223
Fair Value, Inputs, Level 1 [Member]
   
Plan assets fair value 392 375
Fair Value, Inputs, Level 2 [Member]
   
Plan assets fair value $ 8,522 $ 7,223