Note 3 - Acquisitions (Details) (USD $)	3 Months Ended		9 Months Ended		75 Months Ended	76 Months Ended	3 Months Ended		9 Months Ended		3 Months Ended		9 Months Ended		12 Months Ended		3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2014	Sep. 30, 2014 Selling, General and Administrative Expenses [Member] Acquisitions 2013 [Member]	Sep. 30, 2013 Selling, General and Administrative Expenses [Member] Acquisitions 2013 [Member]	Sep. 30, 2014 Selling, General and Administrative Expenses [Member] Acquisitions 2013 [Member]	Sep. 30, 2013 Selling, General and Administrative Expenses [Member] Acquisitions 2013 [Member]	Sep. 30, 2014 Selling, General and Administrative Expenses [Member] 2014 Acquisitions [Member]	Sep. 30, 2013 Selling, General and Administrative Expenses [Member] 2014 Acquisitions [Member]	Sep. 30, 2014 Selling, General and Administrative Expenses [Member] 2014 Acquisitions [Member]	Sep. 30, 2013 Selling, General and Administrative Expenses [Member] 2014 Acquisitions [Member]	Dec. 31, 2013 Acquisitions 2013 [Member]	Dec. 31, 2013 Other 2011 Acquisitions [Member]	Sep. 30, 2014 2014 Acquisitions [Member]	Sep. 30, 2014 2014 Acquisitions [Member]	Jun. 30, 2014 2014 Acquisitions [Member]
Note 3 - Acquisitions (Details) [Line Items]
Number of Businesses Acquired					49	49
Business Combination, Consideration Transferred															$ 7,300,000			$ 195,532,000
Payments to Acquire Businesses, Gross															3,300,000			189,700,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Cash and Equivalents																8,000			1,100,000
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Liabilities															4,000,000				6,900,000
Business Acquisition, Transaction Costs															108,000				1,500,000
Business Combination, Acquisition Related Costs	871,000	186,000	2,825,000	1,093,000			0	0	25,000	25,000	37,000	(55,000)	964,000	112,000
Business Acquisition, Goodwill, Expected Tax Deductible Amount	2,700,000		2,700,000		2,700,000	2,700,000											117,300,000	117,300,000
Business Acquisition Purchase Price Allocation Intangible Assets Expected Tax Deductible Amount	3,900,000		3,900,000		3,900,000	3,900,000											36,400,000	36,400,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual																	21,800,000	43,600,000
Business Combination, Pro Forma Information, Earnings or Loss of Acquiree since Acquisition Date, Actual																	106,000	288,000
Business Combination, Pro Forma Information, Adjustments to Interest and Other Expenses Related to Funding of Acquisition	(10,000)	890,000	(103,000)	2,400,000
Business Combination, Pro Forma Information, Incremental Depreciation and Amoritzation	75,000	4,500,000	3,400,000	13,300,000
Business Combination, Pro Forma Information, Adjustments to Selling, General and Administrative Expense	$ 0	$ 1,800,000	$ 5,600,000	$ 4,800,000