Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Consolidated Statements Of Operations [Abstract]
Net sales	$ 489,180	$ 468,764	$ 500,106
Cost of goods sold	(390,961)	(360,113)	(386,407)
Gross margin	98,219	108,651	113,699
Selling, general and administrative	(71,949)	(72,562)	(77,911)
Environmental Remediation Expense	3,600
Gain on sale of facility	1,835
Litigation Settlement Reimbursements		1,175	2,280
Operating income (loss)	24,505	37,264	38,068
Interest and other income	621	322	(72)
Interest expense			(69)
Income before income taxes	25,126	37,586	37,927
Income tax provision	(7,460)	(13,800)	(13,690)
Net income (loss)	$ 17,666	$ 23,786	$ 24,237
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic	7,848	7,782	7,595
Diluted	7,919	7,886	7,765
EARNINGS (LOSS) PER SHARE OF COMMON STOCK:
Basic	$ 2.25	$ 3.06	$ 3.19
Diluted	$ 2.23	$ 3.02	$ 3.12