Note 2 - Other Assets (Details) (USD $)	6 Months Ended				6 Months Ended	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012	Jun. 30, 2013 Franchise Rights [Member]	Jun. 30, 2013 Sales Revenue, Services, Net [Member]	Jun. 30, 2013 Computer Software, Intangible Asset [Member]	Jun. 30, 2012 Computer Software, Intangible Asset [Member]	Jun. 30, 2013 Computer Software, Intangible Asset [Member]	Jun. 30, 2012 Computer Software, Intangible Asset [Member]
Note 2 - Other Assets (Details) [Line Items]
Other Assets, Noncurrent	$ 47,809,000		$ 48,510,000	$ 4,500,000		$ 40,300,000		$ 40,300,000
Finite-Lived Intangible Assets, Accumulated Amortization						5,500,000		5,500,000
Finite-Lived Intangible Asset, Useful Life								15 years
Concentration Risk, Percentage					47.00%
Depreciation, Depletion and Amortization	$ 44,228,000	$ 34,267,000				$ 700,000	$ 700,000	$ 1,500,000	$ 1,400,000