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Defined Benefit Plan - Additional Information (Details) | 6 Months Ended
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Jun. 30, 2017
Compensation and Retirement Disclosure [Abstract] |
Consecutive years of service | 5 years
Years of employment | 10 years

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- Definition Defined Benefit Plan, Consecutive Years Of Service To Calculate Highest Average Compensation + References No definition available. + Details
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- Definition Defined Benefit Plans, Years Of Employment + References No definition available. + Details
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- References No definition available. + Details
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