Segments (Tables)

3 Months Ended

Jul. 31, 2019

Segments

Schedule of segment results

	Three Months Ended July 31, 2019
					Depreciation and		Adjusted
	Net Sales		Gross Profit		Amortization		EBITDA
	(in thousands)
Geographic divisions	$	840,157	$	271,354	$	28,934	$	83,082
Other		7,019		2,300		52		506
Corporate		—		—		289		—
	$	847,176	$	273,654	$	29,275	$	83,588

	Three Months Ended July 31, 2018
					Depreciation and		Adjusted
	Net Sales		Gross Profit		Amortization		EBITDA
	(in thousands)
Geographic divisions	$	771,550	$	242,575	$	25,855	$	74,595
Other		6,594		2,241		58		677
Corporate		—		—		409		—
	$	778,144	$	244,816	$	26,322	$	75,272

Reconciliation of Adjusted EBITDA to net income

	Three Months Ended
	July 31,
	2019		2018
	(in thousands)
Net income	$	24,820	$	8,650
Interest expense		18,277		16,188
Interest income		(12)		(236)
Provision for income taxes		7,590		2,836
Depreciation expense		12,422		10,610
Amortization expense		16,853		15,712
Stock appreciation expense(a)		60		334
Redeemable noncontrolling interests(b)		662		531
Equity-based compensation(c)		1,395		404
Severance and other permitted costs(d)		554		4,836
Transaction costs (acquisitions and other)(e)		972		4,753
Gain on sale of assets		(156)		(121)
Effects of fair value adjustments to inventory(f)		151		4,129
Change in fair value of financial instruments(g)		—		6,019
Debt transaction costs(h)		—		627
Adjusted EBITDA	$	83,588	$	75,272

(a) Represents non-cash expense related to stock appreciation rights agreements.

(b) Represents non-cash compensation expense related to changes in the fair values of noncontrolling interests.

(c) Represents non-cash equity-based compensation expense related to the issuance of share-based awards.

(d) Represents severance expenses and other costs permitted in calculations under the ABL Facility and the First Lien Facility.

(e) Represents costs related to acquisitions paid to third parties.

(f) Represents the non-cash cost of sales impact of purchase accounting adjustments to increase inventory to its estimated fair value.

(g) Represents the mark-to-market adjustments for derivative financial instruments.

(h) Represents costs paid to third-party advisors related to debt refinancing activities.

Schedule of net sales to external customers by main product lines

	Three Months Ended
	July 31,
	2019		2018
	(in thousands)
Wallboard	$	341,595	$	317,735
Ceilings		129,110		115,855
Steel framing		131,829		129,112
Other products		244,642		215,442
Total net sales	$	847,176	$	778,144

Schedule of net sales by major geographic area

	Three Months Ended
	July 31,
	2019		2018
	(in thousands)
United States	$	731,343	$	690,731
Canada		115,833		87,413
Total net sales	$	847,176	$	778,144

Schedule of long-lived assets by major geographic area

	July 31,		April 30,
	2019		2019
	(in thousands)
United States	$	255,037	$	249,857
Canada		32,498		32,492
Total property and equipment, net	$	287,535	$	282,349