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Retirement Benefit Plans (Tables) | 12 Months Ended
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Dec. 31, 2016
Retirement Benefit Plans [Abstract] |
Defined Contribution Plan Matching Obligations | Matching obligations, in connection with the plans which are funded in cash and typically contributed to the plans in March of the following year, are as follows (in thousands):
|  | U.S. Defined Contribution |
Year ended December 31, |  |  |
2016 |  | $ | 8,625 |
2015 |  |  | 8,445 |
2014 |  |  | 8,267 |

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- Definition Tabular disclosure of defined contribution plan matching obligations in connections with the plans which are funded in cash. + References No definition available. + Details
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- References No definition available. + Details
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