Goodwill and Other Long-Lived Assets (Tables)

12 Months Ended

May 31, 2018

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Changes in Carrying Amount of Goodwill

The following table summarizes the changes in the carrying amount of goodwill during fiscal 2018 and fiscal 2017 by reportable business segment:

(in thousands)	Steel Processing		Pressure Cylinders			Engineered Cabs			Other			Total
Balance at May 31, 2016
Goodwill	$	7,045	$	233,371		$	44,933		$	127,245		$	412,594
Accumulated impairment losses		-		-			(44,933	)		(121,594	)		(166,527	)
		7,045		233,371			-			5,651			246,067
Acquisitions and purchase accounting adjustments		854		-			-			-			854
Translation adjustments		-		752			-			-			752
		854		752			-			-			1,606
Balance at May 31, 2017
Goodwill		7,899		234,123			44,933			127,245			414,200
Accumulated impairment losses		-		-			(44,933	)		(121,594	)		(166,527	)
		7,899		234,123			-			5,651			247,673
Acquisitions and purchase accounting adjustments		-		103,437			-			-			103,437
Translation adjustments		-		3,739			-			-			3,739
Impairment losses		-		(4,015	)		-			(5,651	)		(9,666	)
		-		103,161			-			(5,651	)		97,510
Balance at May 31, 2018
Goodwill		7,899		341,299			44,933			127,245			521,376
Accumulated impairment losses		-		(4,015	)		(44,933	)		(127,245	)		(176,193	)
	$	7,899	$	337,284		$	-		$	-		$	345,183

Summary of Other Intangible Assets by Class

The following table summarizes other intangible assets by class as of May 31, 2018 and 2017:

	2018				2017
			Accumulated				Accumulated
(in thousands)	Cost		Amortization		Cost		Amortization
Indefinite-lived intangible assets:
Trademarks	$	76,701	$	-	$	14,501	$	-
Total indefinite-lived intangible assets		76,701		-		14,501		-
Definite-lived intangible assets:
Customer relationships	$	173,363	$	57,125	$	96,262	$	45,822
Non-compete agreements		8,669		8,137		9,443		7,751
Technology / know-how		26,411		5,856		21,755		5,607
Other		3,804		3,804		3,954		3,954
Total definite-lived intangible assets		212,247		74,922		131,414		63,134
Total intangible assets	$	288,948	$	74,922	$	145,915	$	63,134

Estimated Amortization Expense

Amortization expense for each of the next five fiscal years is estimated to be:

(in thousands)
2019	$	15,308
2020	$	13,299
2021	$	12,539
2022	$	10,858
2023	$	10,221