Note 1 - Nature of Operations and Basis of Presentation (Detail)	0 Months Ended	1 Months Ended		12 Months Ended					60 Months Ended
	Aug. 04, 2010	Aug. 23, 2010	Jan. 31, 2010	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	Dec. 31, 2008	Dec. 31, 2012
Number of Businesses Acquired				3	9	14	11	3	40
Number Of Service Centers				57					57
Number of States in which Entity Operates				50					50
Stock Issued During Period, Shares, New Issues (in Shares)	103,947	17,000	739,506			9,300,000	1,250,361