QUARTERLY FINANCIAL DATA (UNAUDITED) (Schedule of Quarterly Data) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2018
Quarterly Financial Information Disclosure [Abstract]
Net sales	$ 511,746	$ 553,297	$ 506,784	$ 482,076	$ 505,305	$ 547,257	$ 533,566	$ 518,478	$ 2,053,903	$ 2,104,606	$ 2,265,670
Gross profit	129,937	132,395	105,607	97,831	95,030	113,208	101,351	88,908	465,770	398,497	467,257
Operating income (loss)	25,261	19,135	9,191	2,455	(2,641)	18,992	(20,880)	(27,964)	56,042	(32,493)	86,670
(Loss) income before income taxes and equity in earnings of equity-method investees	20,427	15,358	3,210	(5,167)	(8,378)	11,931	(26,679)	(32,878)	33,828	(56,004)	72,434
Net income (loss) from continuing operations	3,699	25,036	1,852	(4,953)	(7,336)	8,783	(31,787)	(23,087)	25,634	(53,427)	74,744
Net loss from discontinued operations, net of tax	(460)	(697)	(2,816)	(102,068)	(6,215)	(74,620)	(34,714)	(14,338)	(106,041)	(129,887)	(65,050)
Net (loss) income	$ 3,239	$ 24,339	$ (964)	$ (107,021)	$ (13,551)	$ (65,837)	$ (66,501)	$ (37,425)	$ (80,407)	$ (183,314)	$ 9,694
Net (loss) income per common share:
Basic net income (loss) per common share from continuing operations (USD per share)	$ 0.04	$ 0.24	$ 0.02	$ (0.05)	$ (0.07)	$ 0.08	$ (0.31)	$ (0.22)	$ 0.25	$ (0.51)	$ 0.72
Basic net (loss) income per common share from discontinued operations (USD per share)	0	(0.01)	(0.03)	(0.98)	(0.06)	(0.72)	(0.33)	(0.14)	(1.02)	(1.25)	(0.63)
Basic net income (loss) per common share (USD per share)	0.04	0.23	(0.01)	(1.03)	(0.13)	(0.63)	(0.64)	(0.36)	(0.77)	(1.76)	0.09
Diluted net (loss) income per common share from continuing operations (USD per share)	0.04	0.24	0.02	(0.05)	(0.07)	0.08	(0.31)	(0.22)	0.25	(0.51)	0.72
Diluted net (loss) income per common share from discontinued operations (USD per share)	0	(0.01)	(0.03)	(0.98)	(0.06)	(0.72)	(0.33)	(0.14)	(1.02)	(1.25)	(0.63)
Diluted net income (loss) per common share (USD per share)	$ 0.04	$ 0.23	$ (0.01)	$ (1.03)	$ (0.13)	$ (0.63)	$ (0.64)	$ (0.36)	$ (0.77)	$ (1.76)	$ 0.09