Note 3 - Acquisitions (Details) (USD $)	3 Months Ended		69 Months Ended	83 Months Ended	3 Months Ended		12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014	Mar. 31, 2014	Mar. 31, 2014 Acquisitions 2013 [Member]	Mar. 31, 2013 Acquisitions 2013 [Member]	Dec. 31, 2013 Acquisitions 2013 [Member]	Dec. 31, 2013 Other 2011 Acquisitions [Member]	Mar. 31, 2014 2014 Acquisitions [Member]	Mar. 31, 2014 2014 Acquisitions [Member]	Mar. 31, 2014 Pro Forma Additional Expenses [Member]	Mar. 31, 2013 Pro Forma Additional Expenses [Member]
Note 3 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired			46	46
Business Combination, Consideration Transferred							$ 7,300,000		$ 104,100,000	$ 104,086,000
Payments to Acquire Businesses, Gross							3,300,000		97,800,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents								8,000	599,000	599,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities							4,000,000		6,900,000	6,900,000
Business Acquisition, Transaction Costs							108,000		1,300,000	1,300,000
Business Combination, Acquisition Related Costs	1,192,000	449,000			25,000	25,000			739,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount	2,700,000		2,700,000	2,700,000					14,200,000	14,200,000
Business Acquisition Purchase Price Allocation Intangible Assets Expected Tax Deductible Amount	3,900,000		3,900,000	3,900,000					14,900,000	14,900,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual									8,500,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual									724,000
Interest Expense	580,000	571,000									1,200,000	1,500,000
Depreciation, Depletion and Amortization	14,342,000	16,326,000									756,000	2,900,000
Selling, General and Administrative Expense	$ 40,528,000	$ 33,257,000									$ 4,400,000	$ 943,000