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Subsequent Events	3 Months Ended
Subsequent Events	Mar. 31, 2019
Subsequent Events [Abstract]
Subsequent Events	Subsequent Event Tennessee Shared Service Center Closure On April 18, 2019, we announced the closure of our shared service center in Johnson City, Tennessee, effective at the end of June 2019. Closure of the Tennessee shared service center aligns with our focus on operating excellence and efficiency and is not expected to have a material impact on our financial statements.