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Pension and Retirement Plans (Tables) | 12 Months Ended
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Sep. 30, 2016
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Net Benefit Costs [Table Text Block] | The components of net periodic benefit costs related to the U.S. and international plans are as follows:
| Years Ended September 30
| 2016 |  | 2015
| Foreign |  | U.S. |  | Total |  | Foreign |  | U.S. |  | Total
| (amounts in thousands)
Pension: |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | 35 |  |  | $ | — |  |  | $ | 35 |  |  | $ | 56 |  |  | $ | — |  |  | $ | 56 |
Interest cost | 571 |  |  | 43 |  |  | 614 |  |  | 634 |  |  | 52 |  |  | 686 |
Expected return on plan assets | (357 | ) |  | — |  |  | (357 | ) |  | (423 | ) |  | — |  |  | (423 | )
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service gains | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of net (gain)/loss | 174 |  |  | (5 | ) |  | 169 |  |  | 193 |  |  | (3 | ) |  | 190 |
Net periodic benefit cost | $ | 423 |  |  | $ | 38 |  |  | $ | 461 |  |  | $ | 460 |  |  | $ | 49 |  |  | $ | 509 |
Post Retirement: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Service cost | $ | — |  |  | $ | 27 |  |  | $ | 27 |  |  | $ | — |  |  | $ | 34 |  |  | $ | 34 |
Interest cost | — |  |  | 42 |  |  | 42 |  |  | — |  |  | 44 |  |  | 44 |
Expected return on plan assets | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Prior service costs/(gains) | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Amortization of net (gain)/loss | — |  |  | (79 | ) |  | (79 | ) |  | — |  |  | (50 | ) |  | (50 | )
Net periodic benefit cost | $ | — |  |  | $ | (10 | ) |  | $ | (10 | ) |  | $ | — |  |  | $ | 28 |  |  | $ | 28 |
Pension: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in minimum liability included in other comprehensive income (loss) | $ | 3,105 |  |  | $ | 25 |  |  | $ | 3,130 |  |  | $ | 163 |  |  | $ | (6 | ) |  | $ | 157 |
Post Retirement: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in minimum liability included in other comprehensive income (loss) | — |  |  | 283 |  |  | 283 |  |  | — |  |  | (89 | ) |  | (89 | )
Total: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Increase (decrease) in minimum liability included in comprehensive income (loss) | $ | 3,105 |  |  | $ | 308 |  |  | $ | 3,413 |  |  | $ | 163 |  |  | $ | (95 | ) |  | $ | 68 |
Schedule of Changes in Projected Benefit Obligations [Table Text Block] | The following table presents an analysis of the changes in 2016 and 2015 of the benefit obligation, the plan assets and the funded status of the plans:
| Years Ended September 30
| 2016 |  | 2015
| Foreign |  | U.S. |  | Total |  | Foreign |  | U.S. |  | Total
| (Amounts in thousands)
Pension: |  |  |  |  |  |  |  |  |  |  |
Change in projected benefit obligation (“PBO”) |  |  |  |  |  |  |  |  |  |  |
Balance beginning of year | $ | 17,979 |  |  | $ | 1,022 |  |  | $ | 19,001 |  |  | $ | 18,919 |  |  | $ | 1,228 |  |  | $ | 20,147 |
Service cost | 35 |  |  | — |  |  | 35 |  |  | 56 |  |  | — |  |  | 56 |
Interest cost | 571 |  |  | 43 |  |  | 614 |  |  | 635 |  |  | 52 |  |  | 687 |
Changes in actuarial assumptions | 3,948 |  |  | 20 |  |  | 3,968 |  |  | 304 |  |  | (8 | ) |  | 296 |
Foreign exchange impact | (2,069 | ) |  | — |  |  | (2,069 | ) |  | (1,534 | ) |  | — |  |  | (1,534 | )
Benefits paid | (900 | ) |  | (256 | ) |  | (1,156 | ) |  | (401 | ) |  | (250 | ) |  | (651 | )
Projected benefit obligation at end of year | $ | 19,564 |  |  | $ | 829 |  |  | $ | 20,393 |  |  | $ | 17,979 |  |  | $ | 1,022 |  |  | $ | 19,001 |
Changes in fair value of plan assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year | $ | 9,301 |  |  | $ | — |  |  | $ | 9,301 |  |  | $ | 10,094 |  |  | $ | — |  |  | $ | 10,094 |
Actual gain (loss) on plan assets | 111 |  |  | — |  |  | 111 |  |  | (117 | ) |  | — |  |  | (117 | )
Company contributions | 406 |  |  | 256 |  |  | 662 |  |  | 398 |  |  | 251 |  |  | 649 |
Foreign exchange impact | (1,289 | ) |  | — |  |  | (1,289 | ) |  | (673 | ) |  | — |  |  | (673 | )
Benefits paid | (900 | ) |  | (256 | ) |  | (1,156 | ) |  | (401 | ) |  | (251 | ) |  | (652 | )
Fair value of plan assets at end of year | $ | 7,629 |  |  | $ | — |  |  | $ | 7,629 |  |  | $ | 9,301 |  |  | — |  |  | $ | 9,301 |
Funded status | $ | (11,935 | ) |  | $ | (829 | ) |  | $ | (12,764 | ) |  | $ | (8,678 | ) |  | $ | (1,022 | ) |  | $ | (9,700 | )
Unamortized net loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Net amount recognized | $ | (11,935 | ) |  | $ | (829 | ) |  | $ | (12,764 | ) |  | $ | (8,678 | ) |  | $ | (1,022 | ) |  | $ | (9,700 | )
Post Retirement: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Change in projected benefit obligation (“PBO”): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Balance beginning of year | $ | — |  |  | $ | 985 |  |  | $ | 985 |  |  | $ | — |  |  | $ | 1,045 |  |  | $ | 1,045 |
Service cost | — |  |  | 27 |  |  | 27 |  |  | — |  |  | 34 |  |  | 34 |
Interest cost | — |  |  | 42 |  |  | 42 |  |  | — |  |  | 44 |  |  | 44 |
Changes in actuarial assumptions | — |  |  | 203 |  |  | 203 |  |  | — |  |  | (138 | ) |  | (138 | )
Foreign exchange impact | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Benefits paid | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Projected benefit obligation at end of year | $ | — |  |  | $ | 1,257 |  |  | $ | 1,257 |  |  | $ | — |  |  | $ | 985 |  |  | $ | 985 |
Changes in fair value of plan assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fair value of plan assets at beginning of year | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Actual gain/(loss) on plan assets | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Company contributions | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Foreign exchange impact | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Benefits paid from plan assets | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Fair value of plan assets at end of year | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Funded status | $ | — |  |  | $ | (1,257 | ) |  | $ | (1,257 | ) |  | $ | — |  |  | $ | (985 | ) |  | $ | (985 | )
Unamortized net loss | — |  |  | — |  |  | — |  |  | — |  |  | — |  |  | — |
Net amount recognized | $ | — |  |  | $ | (1,257 | ) |  | $ | (1,257 | ) |  | $ | — |  |  | $ | (985 | ) |  | $ | (985 | )
Schedule of Amounts Recognized in Balance Sheet [Table Text Block] | The amounts recognized in the consolidated balance sheet consist of:
| Years Ended September 30
| 2016 |  | 2015
| Foreign |  | U.S. |  | Total |  | Foreign |  | U.S. |  | Total
| (Amounts in thousands)
Pension: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued benefit liability | $ | (11,936 | ) |  | $ | (829 | ) |  | $ | (12,765 | ) |  | $ | (8,678 | ) |  | $ | (1,022 | ) |  | $ | (9,700 | )
Deferred tax | (216 | ) |  | 14 |  |  | (202 | ) |  | (490 | ) |  | 24 |  |  | (466 | )
Accumulated other comprehensive income | 9,001 |  |  | 26 |  |  | 9,027 |  |  | 5,623 |  |  | 11 |  |  | 5,634 |
Net amount recognized | $ | (3,151 | ) |  | $ | (789 | ) |  | $ | (3,940 | ) |  | $ | (3,545 | ) |  | $ | (987 | ) |  | $ | (4,532 | )
Post Retirement: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued benefit liability | $ | — |  |  | $ | (1,257 | ) |  | $ | (1,257 | ) |  | $ | — |  |  | $ | (985 | ) |  | $ | (985 | )
Deferred tax | — |  |  | 52 |  |  | 52 |  |  | — |  |  | 165 |  |  | 165 |
Accumulated other comprehensive income (loss) | — |  |  | 97 |  |  | 97 |  |  | — |  |  | (73 | ) |  | (73 | )
Net amount recognized | $ | — |  |  | $ | (1,108 | ) |  | $ | (1,108 | ) |  | $ | — |  |  | $ | (893 | ) |  | $ | (893 | )
Total pension and post retirement: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Accrued benefit liability | $ | (11,936 | ) |  | $ | (2,086 | ) |  | $ | (14,022 | ) |  | $ | (8,678 | ) |  | $ | (2,007 | ) |  | $ | (10,685 | )
Deferred tax | (216 | ) |  | 66 |  |  | (150 | ) |  | (490 | ) |  | 189 |  |  | (301 | )
Accumulated other comprehensive income | 9,001 |  |  | 123 |  |  | 9,124 |  |  | 5,623 |  |  | (62 | ) |  | 5,561 |
Net amount recognized | $ | (3,151 | ) |  | $ | (1,897 | ) |  | $ | (5,048 | ) |  | $ | (3,545 | ) |  | $ | (1,880 | ) |  | $ | (5,425 | )
Accumulated Benefit Obligation: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Pension | $ | (19,396 | ) |  | $ | (829 | ) |  | $ | (20,225 | ) |  | $ | (17,866 | ) |  | $ | (1,022 | ) |  | $ | (18,888 | )
Post Retirement | — |  |  | (1,257 | ) |  | (1,257 | ) |  | — |  |  | (985 | ) |  | (985 | )
Total accumulated benefit obligation | $ | (19,396 | ) |  | $ | (2,086 | ) |  | $ | (21,482 | ) |  | $ | (17,866 | ) |  | $ | (2,007 | ) |  | $ | (19,873 | )
Schedule of Accrued Liabilities [Table Text Block] | Accrued benefit liability reported as:
| September 30,
| 2016 |  | 2015
| (Amounts in thousands)
Current accrued benefit liability | $ | 581 |  |  | $ | 675 |
Non-current accrued benefit liability | 13,441 |  |  | 10,009 |
Total accrued benefit liability | $ | 14,022 |  |  | $ | 10,684 |
Schedule of Expected Benefit Payments [Table Text Block] | The following benefit payments, which reflect expected future service, as appropriate, are expected to be paid (amounts in thousands):
Fiscal year ending September 30: |  | (Amounts in thousands)
2016 |  | $ | 622 |
2017 |  | 588 |
2018 |  | 628 |
2019 |  | 643 |
2020 |  | 671 |
Thereafter |  | 3,932 |
Schedule of Allocation of Plan Assets [Table Text Block] | The fair value of the assets held by the U.K. pension plan by asset category are as follows:
| Fair Values as of
| September 30, 2016 |  | September 30, 2015
| Fair Value Measurements Using Inputs Considered as |  | Fair Value Measurements Using Inputs Considered as
Asset Category | Total |  | Level 1 |  | Level 2 |  | Level 3 |  | Total |  | Level 1 |  | Level 2 |  | Level 3
| (Thousands)
Cash on deposit | $ | 86 |  |  | $ | 86 |  |  | $ | — |  |  | $ | — |  |  | $ | 324 |  |  | $ | 324 |  |  | $ | — |  |  | $ | — |
Pooled funds | 7,543 |  |  | — |  |  | 7,543 |  |  | — |  |  | 8,977 |  |  | — |  |  | 8,977 |  |  | — |
Total plan assets | $ | 7,629 |  |  | $ | 86 |  |  | $ | 7,543 |  |  | $ | — |  |  | $ | 9,301 |  |  | $ | 324 |  |  | $ | 8,977 |  |  | $ | — |
Projected Benefit Obligations |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Assumptions Used [Table Text Block] | The following table provides the weighted average actuarial assumptions used to determine the actuarial present value of projected benefit obligations at:
| Domestic |  | International
| September 30, |  | September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Discount rate: | 3.50 | % |  | 4.25 | % |  | 1.77 | % |  | 3.10 | %
Expected return on plan assets: |  |  |  |  | 3.60 | % |  | 4.20 | %
Rate of compensation increase: |  |  |  |  | 1.00 | % |  | 1.00 | %
Net Periodic Benefit Cost |
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Schedule of Assumptions Used [Table Text Block] | The following table provides the weighted average actuarial assumptions used to determine net periodic benefit cost for years ended:
| Domestic |  | International
| September 30, |  | September 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Discount rate: | 4.25 | % |  | 4.25 | % |  | 3.10 | % |  | 3.25 | %
Expected return on plan assets: |  |  |  |  | 4.20 | % |  | 4.40 | %
Rate of compensation increase: |  |  |  |  | 1.00 | % |  | 1.00 | %

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