Note 5 - Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2014

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

	United					United
	States		Canada			Kingdom			Australia		Total
Balance at December 31, 2013	$	273,070	$	19,279		$	39,593		$	37,370	$	369,312
Goodwill acquired during the year		125,764		—			1,588			8,478		135,830
Adjustments to prior year acquisitions		64		—			(373	)		—		(309	)
Effect of foreign currency translation		—		(78	)		1,478			3,651		5,051
Balance at June 30, 2014	$	398,898	$	19,201		$	42,286		$	49,499	$	509,884

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

		June 30, 2014
	Estimated useful lives (months)	Gross carrying amount		Accumulated amortization			Net carrying value
Amortizable intangible assets:
Customer relationships	40 to 60	$	252,349	$	(153,112	)	$	99,237
Tradenames	45 to 84		73,338		(42,422	)		30,916
Covenants not to compete	36		6,193		(3,567	)		2,626
Technology	24 to 40		9,482		(7,737	)		1,745
Totals		$	341,362	$	(206,838	)	$	134,524

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

	Amount
Six months ended December 31, 2014	$	27,966
Year ended December 31:
2015		48,532
2016		34,584
2017		21,227
2018		1,685
Thereafter		530
Total	$	134,524