Consolidated Statements Of Income - USD ($) shares in Thousands	12 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2017
Consolidated Statements Of Income [Abstract]
Net sales	$ 443,588,000	$ 489,180,000	$ 468,764,000
Cost of goods sold	(373,648,000)	(390,961,000)	(360,113,000)
Gross margin	69,940,000	98,219,000	108,651,000
Selling, general and administrative	(81,298,000)	(71,949,000)	(72,562,000)
Environmental remediation		3,600,000
ERP impairment	(21,273,000)	0	0
Restructuring expense	(10,048,000)
Gain on sale of facility		1,835,000
Litigation settlement (costs) reimbursements	(475,000)	0	1,175,000
Operating income (loss)	(43,154,000)	24,505,000	37,264,000
Other income (expense):
Other income (expense)	546,000	621,000	322,000
Interest expense
Total	546,000	621,000	322,000
Income (loss) before income taxes	(42,608,000)	25,126,000	37,586,000
Income tax benefit (provision)	10,003,000	(7,460,000)	(13,800,000)
Net income (loss)	$ (32,605,000)	$ 17,666,000	$ 23,786,000
Weighted average number of common shares outstanding:
Basic	7,889	7,848	7,782
Diluted	7,889	7,919	7,886
Earnings per share of common stock
Basic	$ (4.13)	$ 2.25	$ 3.06
Diluted	$ (4.13)	$ 2.23	$ 3.02