Note 5 - Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2015

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

	United					United
	States		Canada			Kingdom			Australia			Total
Balance at December 31, 2014	$	401,560	$	17,178		$	38,354		$	38,587		$	495,679
Goodwill acquired during the year		807		—			—			—			807
Adjustments to prior year acquisitions		468		—			—			—			468
Effect of foreign currency translation		—		(2,021	)		(1,868	)		(3,058	)		(6,947	)
Balance at March 31, 2015	$	402,835	$	15,157		$	36,486		$	35,529		$	490,007

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

			March 31, 2015
	Estimated useful lives (months)		Gross carrying amount		Accumulated amortization			Net carrying value
Amortizable intangible assets:
Customer relationships		40 to 60	$	239,707	$	(174,154	)	$	65,553
Tradenames		45 to 84		67,176		(47,146	)		20,030
Covenants not to compete		36		9,487		(4,578	)		4,909
Technology		24 to 40		9,048		(7,912	)		1,136
Totals			$	325,418	$	(233,790	)	$	91,628

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

	Amount
Nine months ended December 31, 2015	$	33,846
Year ended December 31:
2016		33,633
2017		21,172
2018		2,094
2019		883
Total	$	91,628