v2.4.0.8
Defined Benefit Pension Plan (Details) (USD $)
 12 Months Ended
Sep. 30, 2013
Sep. 30, 2012
Information about plan assets    
Target allocation (as a percent) 100.00%  
Actual (as a percent) 100.00%  
Equity securities
    
Information about plan assets    
Target allocation (as a percent) 70.00%  
Actual (as a percent) 49.40%  
Number of pooled funds 1  
Percentage of UK company shares 70.00%  
Percentage of international equity securities 30.00%  
Fixed-income securities
    
Information about plan assets    
Target allocation (as a percent) 30.00%  
Actual (as a percent) 50.00%  
Number of pooled funds 1  
Cash equivalents
    
Information about plan assets    
Target allocation (as a percent) 0.00%  
Actual (as a percent) 0.60%  
Defined benefit pension plan
    
Net periodic benefit cost recognized    
Interest cost $ 1,055,000 $ 269,000
Expected return on plan assets (1,055,000) (248,000)
Total net periodic benefit cost   21,000
Change in benefit obligation    
Beginning balance 25,106,000  
Acquisitions/divestitures   24,263,000
Interest cost 1,055,000 269,000
Benefits paid (617,000) (264,000)
Actuarial (gain)/loss (33,000)  
Foreign currency exchange rate changes 47,000 838,000
Ending balance 25,558,000 25,106,000
Change in plan assets    
Beginning balance at fair value 19,320,000  
Acquisitions/divestitures   17,795,000
Actual return on plan assets 1,566,000 820,000
Benefits paid (617,000) (264,000)
Employer's contributions 1,632,000 322,000
Foreign currency exchange rate changes 105,000 647,000
Ending balance at fair value 22,006,000 19,320,000
Underfunded status of the plan (3,552,000) (5,786,000)
Amount recorded in the consolidated balance sheet    
Accrued pension liability recorded in Accrued expenses and other current liabilities and Deferred taxes and other long-term liabilities 3,600,000  
Accumulated benefit obligation (PBO) 25,558,000 25,106,000
Accumulated OCI    
Accumulated OCI at beginning of year (584,000)  
New actuarial (gains)/losses (563,000) (584,000)
Accumulated OCI at end of year (1,147,000) (584,000)
Estimated amounts to be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost during 2014    
Estimated amounts to be amortized from accumulated other comprehensive income (loss) into net periodic benefit cost during next fiscal year 0  
Expected pension plan contributions over the next 10 years    
2014 1,690,000  
2015 1,690,000  
2016 1,690,000  
2017 563,000  
Total 5,633,000  
Actuarial assumptions used to determine the benefit obligations and the net periodic benefit cost    
Discount rate, benefit obligations (as a percent) 4.40% 4.40%
Discount rate, net periodic benefit cost (as a percent) 4.40% 4.40%
Expected return on plan assets, net periodic benefit cost (as a percent) 5.80% 5.50%
Increases to non-GMP pensions in payment accrued pre 4/6/97 (as a percent) 0.00% 0.00%
Increases to non-GMP pensions in payment accrued post 4/6/97 (as a percent) 2.50% 2.30%
Rate of increases to deferred CPI linked benefits (as a percent) 2.50% 2.30%
Rate of increases to deferred RPI linked benefits (as a percent) 3.40% 3.00%
Mortality (as a percent) 90.00%  
Long-term rate of improvement (as a percent) 1.00%  
Expected benefit payments over the next 10 years    
2014 859,000  
2015 771,000  
2016 735,000  
2017 1,212,000  
2018 948,000  
2019 through 2023 5,524,000  
Total $ 10,049,000