Note 5 - Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2012

Schedule of Goodwill [Table Text Block]

	December 31, 2011			June 30, 2012
Balance at  beginning of period	$	90,582		$	300,260
Goodwill acquired during the period		209,619			—
Adjustments to prior year acquisitions		1,799			4,056
Effect of foreign currency translation		(1,740	)		299
Balance at end of period	$	300,260		$	304,615

Schedule of Finite-Lived Intangible Assets [Table Text Block]

				December 31, 2011
	Estimated useful lives (months)			Gross carrying amount		Accumulated amortization				Net carrying carrying value
Amortizable intangible assets:
Customer relationships	40	to	60	$	157,826		$	(50,438	)		$	107,388
Tradenames	45	to	84		48,046			(13,277	)			34,769
Covenants not to compete		36			2,784			(1,587	)			1,197
Technology	24	to	40		6,750			(3,936	)			2,814
Totals				$	215,406		$	(69,238	)		$	146,168

				June 30, 2012
	Estimated useful lives (months)			Gross carrying amount		Accumulated amortization			Net carrying value
Amortizable intangible assets:
Customer relationships	40	to	60	$	158,338	$	(68,712	)	$	89,626
Tradenames	45	to	84		48,185		(18,473	)		29,712
Covenants not to compete		36			2,789		(1,975	)		814
Technology	24	to	40		6,773		(5,239	)		1,534
Totals				$	216,085	$	(94,399	)	$	121,686

Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block]

	Amount
Six months ended December 31, 2012	$	24,127
Year ended December 31:
2013		43,005
2014		27,060
2015		18,473
2016		6,117
Thereafter		2,904
Total	$	121,686