Note 4 - Goodwill and Intangible Assets (Detail) - Intangible assets (USD $) In Thousands, unless otherwise specified				12 Months Ended								0 Months Ended			0 Months Ended	12 Months Ended		0 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2012 Minimum [Member] Customer Relationships [Member]	Dec. 31, 2011 Minimum [Member] Customer Relationships [Member]	Dec. 31, 2012 Minimum [Member] Trade Names [Member]	Dec. 31, 2011 Minimum [Member] Trade Names [Member]	Dec. 31, 2012 Maximum [Member] Customer Relationships [Member]	Dec. 31, 2011 Maximum [Member] Customer Relationships [Member]	Dec. 31, 2012 Maximum [Member] Trade Names [Member]	Dec. 31, 2011 Maximum [Member] Trade Names [Member]	Aug. 03, 2010 Customer Relationships [Member]	Dec. 31, 2012 Customer Relationships [Member]	Dec. 31, 2011 Customer Relationships [Member]	Aug. 03, 2010 Noncompete Agreements [Member]	Dec. 31, 2012 Noncompete Agreements [Member]	Dec. 31, 2011 Noncompete Agreements [Member]	Aug. 03, 2010 Trade Names [Member]	Dec. 31, 2012 Trade Names [Member]	Dec. 31, 2011 Trade Names [Member]
Gross	$ 57,799	$ 57,730
Net	57,799	57,730	55,133
Gross	1,191	1,191
Net	1,191	1,191
Useful Life				5 years	5 years	5 years	5 years	15 years	15 years	10 years	10 years	10 years			3 years	3 years	3 years	5 years
Gross													10,521	10,513
Accumulated Amortization	8,250	6,963											6,709	5,789		346	203		1,195	971
Net	4,603	5,882											3,812	4,724		84	227		707	931
Gross																430	430
Gross																			1,902	1,902
Gross	12,853	12,845
Accumulated Amortization	8,250	6,963											6,709	5,789		346	203		1,195	971
Gross	14,044	14,036
Net	$ 5,794	$ 7,073