Note 5 - Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

	United States		Canada			United Kingdom			Australia		Total
Balance at December 31, 2013	$	273,070	$	19,279		$	39,593		$	37,370	$	369,312
Goodwill acquired during the year		60,430		—			1,588			6,183		68,201
Adjustments to prior year acquisitions		64		—			(373	)		—		(309	)
Effect of foreign currency translation		—		(939	)		399			2,334		1,794
Balance at March 31, 2014	$	333,564	$	18,340		$	41,207		$	45,887	$	438,998

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

			December 31, 2013
	Estimated useful lives (months)		Gross carrying amount		Accumulated amortization			Net carrying value
Amortizable intangible assets:
Customer relationships		40 to 60	$	201,395	$	(132,153	)	$	69,242
Tradenames		45 to 84		59,813		(36,164	)		23,649
Covenants not to compete		36		4,714		(2,986	)		1,728
Technology		24 to 40		7,507		(7,262	)		245
Totals			$	273,429	$	(178,565	)	$	94,864

			March 31, 2014
	Estimated useful lives (months)		Gross carrying amount		Accumulated amortization			Net carrying value
Amortizable intangible assets:
Customer relationships		40 to 60	$	236,373	$	(141,607	)	$	94,766
Tradenames		45 to 84		65,807		(39,186	)		26,621
Covenants not to compete		36		5,892		(3,255	)		2,637
Technology		24 to 40		9,026		(7,447	)		1,579
Totals			$	317,098	$	(191,495	)	$	125,603

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

	Amount
Nine months ended December 31, 2014	$	37,863
Year ended December 31:
2015		42,564
2016		28,862
2017		15,900
2018		414
Total	$	125,603