Note 5 - Goodwill and Intangible Assets (Tables)

9 Months Ended

Sep. 30, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

	United States		Canada			United Kingdom			Australia			Total
Balance at December 31, 2014	$	401,560	$	17,178		$	38,354		$	38,587		$	495,679
Goodwill acquired during the year		5,063		145			—			—			5,208
Adjustments to prior year acquisitions		470		—			—			—			470
Effect of foreign currency translation		—		(3,143	)		(982	)		(7,700	)		(11,825	)
Balance at September 30, 2015	$	407,093	$	14,180		$	37,372		$	30,887		$	489,532

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

				December 31, 2014
	Estimated useful lives (months)			Gross carrying amount		Accumulated amortization			Net carrying value
Amortizable intangible assets:
Customer relationships	40	to	60	$	244,211	$	(167,943	)	$	76,268
Tradenames	45	to	84		68,264		(45,901	)		22,363
Covenants not to compete		36			6,761		(4,116	)		2,645
Technology	24	to	40		9,188		(7,881	)		1,307
Totals				$	328,424	$	(225,841	)	$	102,583

				September 30, 2015
	Estimated useful lives (months)			Gross carrying amount		Accumulated amortization			Net carrying value
Amortizable intangible assets:
Customer relationships	40	to	60	$	239,793	$	(190,290	)	$	49,503
Tradenames	45	to	84		67,242		(50,549	)		16,693
Covenants not to compete		36			10,028		(5,520	)		4,508
Technology	24	to	40		9,061		(8,269	)		792
Totals				$	326,124	$	(254,628	)	$	71,496

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

	Amount
Three months ended December 31, 2015	$	11,210
Years ended December 31:
2016		34,205
2017		21,962
2018		3,126
2019		993
Total	$	71,496