Note 2 - Significant Accounting Policies (Detail) (USD $)	3 Months Ended	12 Months Ended
	Jun. 30, 2012	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Depreciation		$ 62,300,000	$ 48,300,000
Amortization		11,000,000	8,600,000
Goodwill, Purchase Accounting Adjustments	1,700,000
Capitalized Computer Software, Net		40,900,000	41,900,000
Capitalized Computer Software, Accumulated Amortization		4,100,000	1,200,000
Indefinite-Lived Franchise Rights		4,500,000
Amortization of Intangible Assets		3,000,000	1,300,000	500,000
Finite-Lived Intangible Assets, Amortization Expense, Next Twelve Months		3,000,000
Finite-Lived Intangible Assets, Amortization Expense, Year Two		3,000,000
Finite-Lived Intangible Assets, Amortization Expense, Year Three		3,000,000
Finite-Lived Intangible Assets, Amortization Expense, Year Four		3,000,000
Finite-Lived Intangible Assets, Amortization Expense, Year Five		3,000,000
Advertising Expense		4,400,000	3,700,000	2,900,000
Notional Amount of Interest Rate Cash Flow Hedge Derivatives		41,700,000	41,700,000
Vehicles [Member]
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Other Property, Plant, and Equipment, Net		48,600,000
Capital Leases, Lessee Balance Sheet, Assets by Major Class, Property, Plant, and Equipment Other, Accumulated Depreciation		20,200,000
Computer Software, Intangible Asset [Member]
Interest Costs Capitalized		$ 43,000
Finite-Lived Intangible Asset, Useful Life		15 years