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Research and Development Costs
6 Months Ended
Jun. 30, 2016
Research and Development [Abstract]  
Research and Development Costs
16. Research and Development Costs

Expenditures for research and development are charged to expense as incurred and totaled $10.8 million and $22.7 million, respectively, for the three and six month periods ended June 30, 2016, respectively, and $10.1 million and $20.0 million, for the comparable prior year periods. Research and development costs are reported as a component of engineering, design and development expenses in our unaudited condensed consolidated statements of operations.