Goodwill and Intangible Assets (Tables)

12 Months Ended

Apr. 30, 2017

Goodwill and Intangible Assets

Schedule of goodwill activity

	Carrying Amount
Balance at May 1, 2015	$	348,811
Working capital adjustments		(1,338	)
Goodwill acquired during the year		38,833
Balance at April 30, 2016		386,306
Working capital adjustments		(390	)
Goodwill acquired during the year		37,728
Balance at April 30, 2017	$	423,644

Schedule of components of definite lived intangible assets

				April 30, 2017
		Weighted average amortization period
	Estimated useful lives (years)			Gross carrying amount		Accumulated amortization		Net carrying value
Customer relationships	5 - 13		10.9	$	273,196	$	111,291	$	161,905
Definite lived tradenames	5 - 20		18.3		25,250		1,718		23,532
Vendor agreement	8		—		5,644		2,176		3,468
Leasehold interests	7 - 13		8.2		2,516		496		2,020
Totals				$	306,606	$	115,681	$	190,925

				April 30, 2016
		Weighted average amortization period
	Estimated useful lives (years)			Gross carrying amount		Accumulated amortization		Net carrying value
Customer relationships	5 - 13		10.8	$	208,526	$	69,929	$	138,597
Definite lived tradenames	5 - 20		19.5		15,760		447		15,313
Vendor agreement	8		—		5,644		1,470		4,174
Leasehold interests	7 - 13		8.2		2,516		178		2,338
Totals				$	232,446	$	72,024	$	160,422

Schedule of estimated future aggregate amortization expense

	Customer relationships		Tradenames		Vendor agreement		Leasehold interests		Total
Years ending April 30:
2018	$	37,780	$	1,503	$	706	$	318	$	40,307
2019		30,392		1,503		706		318		32,919
2020		23,809		1,503		706		318		26,336
2021		18,715		1,473		706		318		21,212
2022		14,764		1,445		644		318		17,171
Thereafter		36,445		16,105		—		430		52,980
Total	$	161,905	$	23,532	$	3,468	$	2,020	$	190,925