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Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On April 6, 2016 we notified all participants in the Gradall Company Hourly Employees’ Pension Plan of our decision to terminate the plan. Participants in the plan will not lose any benefits but will be given a choice between obtaining certain continued annuity benefits that match the benefits offered under the plan or receiving an immediate one-time lump sum payment in total settlement of benefits. We must meet various legal requirements in connection with the proper termination of the plan, and as a result we do not expect termination of the plan to be completed until 2017.