Note 9 - Income Taxes (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Note 9 - Income Taxes (Details) [Line Items]
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent		35.00%
Goodwill, Impairment Loss	$ 11,500,000			$ 11,539,000
Goodwill Impairment Tax Deductible				2,100,000
Goodwill Impairment Loss, Tax Nondeductible				9,400,000
Deferred Tax Assets, Net, Current		5,200,000
Deferred Tax Liabilities, Net, Noncurrent		59,077,000	49,837,000
Deferred Tax Liabilities, Net		53,843,000	45,195,000
Deferred Tax Assets, Valuation Allowance		983,000	299,000
Liability for Uncertain Tax Positions, Current		1,800,000	2,600,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense		800,000	1,000,000
Income Tax Expense (Benefit)		7,503,000	6,335,000	(2,172,000)
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		1,200,000	1,700,000
Interest And Penalties Recognized For Uncertain Tax Positions [Member]
Note 9 - Income Taxes (Details) [Line Items]
Income Tax Expense (Benefit)		$ (300,000)		$ 100,000