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Pension and Retirement Plans (Detail) - Components of net periodic benefit costs (USD $)
In Thousands, unless otherwise specified
 3 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Pension:
    
Pension:    
Service cost $ 11 $ 15
Interest cost 207 189
Expected return on plan assets (115) (104)
Amortization of:    
Prior service gain 0 0
Amortization of net gain 21 42
Net periodic benefit cost 124 142
Post Retirement:
    
Pension:    
Service cost 3 0
Interest cost 11 9
Amortization of:    
Amortization of net gain (36) (46)
Net periodic benefit cost (22) (37)
Foreign | Pension:
    
Pension:    
Service cost 11 15
Interest cost 190 173
Expected return on plan assets (115) (104)
Amortization of:    
Prior service gain 0 0
Amortization of net gain 23 36
Net periodic benefit cost 109 120
Foreign | Post Retirement:
    
Pension:    
Service cost 0 0
Interest cost 0 0
Amortization of:    
Amortization of net gain 0 0
Net periodic benefit cost 0 0
U.S. | Pension:
    
Pension:    
Service cost 0 0
Interest cost 17 16
Expected return on plan assets 0 0
Amortization of:    
Prior service gain 0 0
Amortization of net gain (2) 6
Net periodic benefit cost 15 22
U.S. | Post Retirement:
    
Pension:    
Service cost 3 0
Interest cost 11 9
Amortization of:    
Amortization of net gain (36) (46)
Net periodic benefit cost $ (22) $ (37)