Note 3 - Acquisitions (Detail) - Preliminary Allocation of Consideration for Other 2011 Acquisitions (Other 2011 Acquisitions [Member], USD $) In Thousands, unless otherwise specified	Sep. 30, 2012 Final Purchase Price Allocation [Member] Customer Relationships [Member]	Sep. 30, 2012 Final Purchase Price Allocation [Member] Trade Names [Member]	Sep. 30, 2012 Final Purchase Price Allocation [Member] Noncompete Agreements [Member]	Sep. 30, 2012 Final Purchase Price Allocation [Member] Technology [Member]	Sep. 30, 2012 Final Purchase Price Allocation [Member] Goodwill [Member]	Sep. 30, 2012 Final Purchase Price Allocation [Member]	Dec. 31, 2011 Preliminary Purchase Price Allocation [Member] Customer Relationships [Member]	Dec. 31, 2011 Preliminary Purchase Price Allocation [Member] Trade Names [Member]	Dec. 31, 2011 Preliminary Purchase Price Allocation [Member] Noncompete Agreements [Member]	Dec. 31, 2011 Preliminary Purchase Price Allocation [Member] Technology [Member]	Dec. 31, 2011 Preliminary Purchase Price Allocation [Member] Goodwill [Member]	Dec. 31, 2011 Preliminary Purchase Price Allocation [Member]	Dec. 31, 2011 Purchase Price Adjustments and Reclassifications [Member] Goodwill [Member]	Dec. 31, 2011 Purchase Price Adjustments and Reclassifications [Member]	Dec. 31, 2011
Equipment and leasehold improvements						$ 213						$ 213
Intangible Assets	18,577	2,989	197	334	19,749		18,577	2,989	197	334	21,500		(1,751)
Net deferred tax liability associated with step-up in book basis						(306)						(356)		50
Assets acquired and liabilities assumed, net						2,800						2,598		202
Totals						$ 44,553						$ 46,052		$ (1,499)	$ 44,600