Summary of Significant Accounting Policies (Self-Insured Retentions) (Details) $ in Millions	12 Months Ended
	Dec. 31, 2016 USD ($)
Accounting Policies [Abstract]
Total Liability/Deductible for Group Health Insurance Per Claim	$ 0.3
Total Liability/Deductible for Workers Compensation Per Claim	0.4
Total Liability/Deductible for Product/General and Auto Insurance Per Claim	$ 0.3