Note 5 - Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2016

Notes Tables

Schedule of Goodwill [Table Text Block]

	United				United
	States		Canada		Kingdom			Australia		Total
Balance at December 31, 2015	$	412,502	$	15,364	$	49,428		$	31,003	$	508,297
Goodwill acquired during the year		70,378		—		—			—		70,378
Adjustments to prior year acquisitions		738		2		(251	)		—		489
Effect of foreign currency translation		—		1,435		(1,531	)		2,311		2,215
Balance at March 31, 2016	$	483,618	$	16,801	$	47,646		$	33,314	$	581,379

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

				December 31, 2015
	Estimated useful lives (months)			Gross carrying amount		Accumulated amortization			Net carrying value
Amortizable intangible assets:
Customer relationships	40	to	60	$	263,293	$	(199,266	)	$	64,027
Tradenames	45	to	84		68,172		(52,354	)		15,818
Covenants not to compete		36			10,254		(6,047	)		4,207
Technology	24	to	40		9,014		(8,393	)		621
Totals				$	350,733	$	(266,060	)	$	84,673

				March 31, 2016
	Estimated useful lives (months)			Gross carrying amount		Accumulated amortization			Net carrying value
Amortizable intangible assets:
Customer relationships	40	to	60	$	296,657	$	(212,493	)	$	84,164
Tradenames	45	to	84		75,323		(54,651	)		20,672
Covenants not to compete		36			10,729		(6,605	)		4,124
Technology	24	to	40		8,973		(8,524	)		449
Totals				$	391,682	$	(282,273	)	$	109,409

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

	Amount
Nine months ended December 31, 2016	$	37,682
Years ended December 31:
2017		40,480
2018		21,131
2019		10,062
2020		54
Total	$	109,409