Self-Insurance (Details) (USD $)	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
General Liability Insurance Deductible	$ 7,500,000
Aggregate General Liability Deductible	20,000,000
Self Insurance Reserve	1,300,000	1,000,000
General Insurance Expense	7,800,000	5,400,000	4,000,000
Employee Health Care [Member]
Self-Insurance Limit	250,000
Employee Health Care Limit / Stop Loss coverage [Member]
Self-Insurance Limit	250,000
Workers Compensation Deductible [Member]
Workers Compensation	500,000
Maximum Incurred Losses not to Exceed - Ohio [Member]
Workers Compensation	500,000
Deductible for all other types of claims [Member]
General Liability Insurance Deductible	$ 500,000