Significant Accounting Policies and Practices (Details)	1 Months Ended	3 Months Ended	12 Months Ended
	Oct. 31, 2014 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($) voting_interest_model_entity variable_interest_entity partnership	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Oct. 31, 2012 USD ($)
Cash and Cash Equivalents
Restricted Cash and Cash Equivalents			$ 900,000	$ 500,000
Allowance for Doubtful Accounts
Allowance for Doubtful Accounts			$ 900,000	1,000,000
Goodwill and Other Intangibles
Forecasted period for income statement and working capital projections to assess goodwill impairment			5 years
Debt Issuance Costs
Debt issuance costs			$ 2,400,000	2,600,000
Accumulated amortization of debt issuance costs			8,200,000	7,300,000
Amortization expense			900,000	1,300,000	$ 1,500,000
Financial Instruments
Book overdrafts			25,800,000	30,800,000
Advertising Costs
Advertising expenses			1,600,000	1,300,000	1,000,000
Equity investment in unconsolidated subsidiaries.
Equity earnings in related investments			2,000,000	1,900,000	2,100,000
Ownership percentage	30.00%
Recognition of pre-tax gain	$ 4,100,000
Sale of Business
Cash received from sale of business, net			$ 1,000,000	0	0
Discontinued Operations, Disposed of by Sale | Security Business
Sale of Business
Sale price of business		$ 1,800,000
Gain on sale of business		500,000
Cash received from sale of business, net		$ 1,000,000
Period of cash consideration to be received		18 months
Contingent consideration receivable from sale of business		$ 500,000
Minimum
Equity investment in unconsolidated subsidiaries.
Voting interest ownership percentage			30.00%
Maximum
Equity investment in unconsolidated subsidiaries.
Voting interest ownership percentage			50.00%
Equipment | Minimum
Leasehold Improvements, Equipment, Land and Construction in Progress, net
Ranges of Estimated useful life			2 years
Equipment | Maximum
Leasehold Improvements, Equipment, Land and Construction in Progress, net
Ranges of Estimated useful life			10 years
Leasehold improvements | Maximum
Leasehold Improvements, Equipment, Land and Construction in Progress, net
Ranges of Estimated useful life			10 years
Leasehold improvements | Average
Leasehold Improvements, Equipment, Land and Construction in Progress, net
Ranges of Estimated useful life			8 years 2 months 12 days
Partnerships and joint ventures
Equity investment in unconsolidated subsidiaries.
Number of ownership interest entities | partnership			38
VIEs
Equity investment in unconsolidated subsidiaries.
Number of ownership interest entities | variable_interest_entity			27
Voting interest model entities
Equity investment in unconsolidated subsidiaries.
Number of ownership interest entities | voting_interest_model_entity			11
General Liability
Insurance Reserves
Liability insurance policies, maximum deductibles or a self-insured retention limit			$ 500,000
Garage Liability Or Automobile Liability
Insurance Reserves
Liability insurance policies, maximum deductibles or a self-insured retention limit			500,000
Workers' compensation and garagekeepers legal liability
Insurance Reserves
Liability insurance policies, maximum deductibles or a self-insured retention limit			$ 300,000
Interest rate swaps | Cash flow hedges
Interest rate swaps
Aggregate starting notional amount						$ 150,000,000
Fixed rate (as a percent)						0.7525%
Variable rate basis			LIBOR
Ineffective portion of cash flow hedges recognized			$ 0
Central Merger
Significant Accounting Policies [Line Items]
Cost of Property Repairs and Maintenance			4,600,000	$ 1,300,000	$ 0
Legal and Other Contingencies
Structural and repair costs incurred			$ 1,500,000
Indemnification of cost pursuant to merger agreement			80.00%