Segments (Tables)

12 Months Ended

Apr. 30, 2017

Segments

Schedule of net sales, Adjusted EBITDA and certain other measures

	Year Ended April 30, 2017
									April 30, 2017
	Net sales		Gross profit		Depreciation & amortization		Adjusted EBITDA
									Total assets
Geographic divisions	$	2,298,871	$	750,564	$	68,001	$	186,155	$	1,376,655
Other		20,275		8,007		310		2,074		11,916
Corporate		—		—		929		—		4,694
	$	2,319,146	$	758,571	$	69,240	$	188,229	$	1,393,265

	Year Ended April 30, 2016
									April 30, 2016
	Net sales		Gross profit		Depreciation & amortization		Adjusted EBITDA
									Total assets
Geographic divisions	$	1,842,634	$	587,213	$	63,093	$	137,459	$	1,217,871
Other		15,548		5,951		295		724		12,310
Corporate		—		—		827		—		10,633
	$	1,858,182	$	593,164	$	64,215	$	138,183	$	1,240,814

	Year Ended April 30, 2015
									April 30, 2015
	Net sales		Gross profit		Depreciation & amortization		Adjusted EBITDA
									Total assets
Geographic divisions	$	1,558,209	$	474,363	$	63,136	$	105,247	$	1,143,637
Other		11,876		4,608		288		549		10,421
Corporate		—		—		741		—		6,918
	$	1,570,085	$	478,971	$	64,165	$	105,796	$	1,160,976

Reconciliation of Adjusted EBITDA to Net income

	Years Ended April 30,
	2017			2016			2015
	(dollars in thousands)
Net income (loss)	$	48,886		$	12,564		$	(11,697	)
Interest expense		36,463			37,418			36,396
Interest income		(152	)		(928	)		(1,010	)
Income tax expense (benefit)		22,654			12,584			(6,626	)
Depreciation expense		25,565			26,667			32,208
Amortization expense		43,675			37,548			31,957
EBITDA	$	177,091		$	125,853		$	81,228
Stock appreciation income or (expense)	$	148		$	1,988		$	2,268
Redeemable noncontrolling interests		3,536			880			1,859
Equity-based compensation		2,534			2,699			6,455
Severance and other permitted costs		(157	)		379			413
Transaction costs (acquisitions and other)		2,249			3,751			2,728
(Gain) loss on disposal of assets		(338	)		(645	)		1,089
Management fee to related party		188			2,250			2,250
Effects of fair value adjustments to inventory		946			1,009			5,012
Interest rate cap mark-to-market		382			19			2,494
Secondary public offering costs		1,385			—			—
Debt transaction costs		265			—			—
EBITDA add-backs		11,138			12,330			24,568
Adjusted EBITDA	$	188,229		$	138,183		$	105,796

Schedule of net sales to external customers by main product lines

	Years Ended April 30,
	2017		2016		2015
	(dollars in thousands)
Wallboard	$	1,058,400	$	870,952	$	718,102
Ceilings		341,007		297,110		278,749
Steel framing		374,151		281,340		243,173
Other products		545,588		408,780		330,061
Total net sales	$	2,319,146	$	1,858,182	$	1,570,085