Benefit Plans - Components of Net Periodic Pension (Benefit) Cost (Detail) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
May 31, 2016 |
May 31, 2015 |
May 31, 2016 |
May 31, 2015 |
|
| U.S Pension Plan [Member] | ||||
| Components of net periodic pension cost (income): | ||||
| Service cost | $ 100 | $ 63 | $ 200 | $ 126 |
| Interest cost on projected benefit obligation | 587 | 585 | 1,174 | 1,170 |
| Expected return on plan assets | (684) | (848) | (1,460) | (1,696) |
| Net periodic pension cost (income) | 3 | (200) | (86) | (400) |
| German Pension Plan [Member] | ||||
| Components of net periodic pension cost (income): | ||||
| Interest cost on projected benefit obligation | 135 | 127 | 265 | 263 |
| Net amortization | 83 | 79 | 163 | 163 |
| Net periodic pension cost (income) | $ 218 | $ 206 | $ 428 | $ 426 |