Quarterly Financial Data (Unaudited) (Schedule of Quarterly Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 557,682	$ 599,797	$ 584,156	$ 560,833	$ 619,598	$ 632,720	$ 616,232	$ 589,219	$ 2,302,468	$ 2,457,769	$ 2,343,505
Gross profit	106,077	125,269	114,273	99,594	125,097	133,013	133,950	123,388	445,213	515,448	519,396
Operating income (loss)	740	23,865	(15,387)	(24,104)	16,580	29,254	30,965	29,241	(14,886)	106,040	109,423
Income before income taxes and equity in earnings of equity-method investees	(8,408)	13,407	(24,577)	(32,409)	5,838	24,032	25,246	26,086	(51,987)	81,202	87,878
Net (loss) income from continuing operations	(7,654)	10,088	(29,278)	(23,101)	(4,556)	25,241	43,130	18,613	(49,945)	82,428	65,541
Net (loss) income from discontinued operations, net of tax	(5,897)	(75,925)	(37,223)	(14,324)	(65,385)	(12,555)	3,973	1,233	(133,369)	(72,734)	1,889
Net (loss) income	$ (13,551)	$ (65,837)	$ (66,501)	$ (37,425)	$ (69,941)	$ 12,686	$ 47,103	$ 19,846	$ (183,314)	$ 9,694	$ 67,430
Net (loss) income per common share:
Basic net income (loss) per common share from continuing operations (USD per share)	$ (0.07)	$ 0.10	$ (0.28)	$ (0.22)	$ (0.04)	$ 0.24	$ 0.42	$ 0.18	$ (0.48)	$ 0.79	$ 0.63
Basic net (loss) income per common share from discontinued operations (USD per share)	(0.06)	(0.73)	(0.36)	(0.14)	(0.63)	(0.12)	0.04	0.01	(1.28)	(0.70)	0.02
Basic net income (loss) per common share (USD per share)	(0.13)	(0.63)	(0.64)	(0.36)	(0.67)	0.12	0.45	0.19	(1.76)	0.09	0.65
Diluted net (loss) income per common share from continuing operations (USD per share)	(0.07)	0.10	(0.28)	(0.22)	(0.04)	0.24	0.41	0.18	(0.48)	0.79	0.63
Diluted net (loss) income per common share from discontinued operations (USD per share)	(0.06)	(0.73)	(0.36)	(0.14)	(0.63)	(0.12)	0.04	0.01	(1.28)	(0.70)	0.02
Diluted net income (loss) per common share (USD per share)	$ (0.13)	$ (0.63)	$ (0.64)	$ (0.36)	$ (0.67)	$ 0.12	$ 0.45	$ 0.19	$ (1.76)	$ 0.09	$ 0.65