Note 5 - Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2013

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill [Table Text Block]

	United					United
	States		Canada			Kingdom		Australia			Total
Balance at December 31, 2011	$	247,940	$	21,287		$	31,033	$	—		$	300,260
Goodwill acquired during the year		13,776		419			—		46,178			60,373
Adjustments to prior year acquisitions		4,805		(1,383	)		3,687		—			7,109
Effect of foreign currency translation		—		718			1,398		285			2,401
Balance at December 31, 2012		266,521		21,041			36,118		46,463			370,143
Goodwill acquired during the year		350		—			2,674		—			3,024
Adjustments to prior year acquisitions		6,199		—			—		(592	)		5,607
Effect of foreign currency translation		—		(1,762	)		801		(8,501	)		(9,462	)
Balance at December 31, 2013	$	273,070	$	19,279		$	39,593	$	37,370		$	369,312

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

				December 31, 2012
	Estimated useful lives (months)			Gross carrying amount		Accumulated amortization		Net carrying value
Amortizable intangible assets:
Customer relationships	40	to	60	$	204,699	$	(90,040)	$	114,659
Tradenames	45	to	84		60,620		(24,413)		36,207
Covenants not to compete		36			3,116		(2,313)		803
Technology	24	to	40		7,530		(6,303)		1,227
Totals				$	275,965	$	(123,069)	$	152,896

				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

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

	Amount
Years ended December 31:
2014	$	39,396
2015		30,040
2016		16,353
2017		8,660
2018		415
Total	$	94,864