Consolidated Statements Of Operations - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2014
Consolidated Statements Of Operations [Abstract]
NET SALES	$ 500,106	$ 466,904	$ 438,543
COST OF GOODS SOLD	(386,407)	(357,044)	(338,280)
GROSS MARGIN	113,699	109,860	100,263
SELLING, GENERAL AND ADMINISTRATIVE	(77,911)	(75,688)	(71,727)
LITIGATION SETTLEMENT COSTS	2,280	250	(6,250)
OPERATING INCOME (LOSS)	38,068	34,422	22,286
Interest and other income	(72)	1,267	1,514
Interest expense	(69)	(130)
INCOME BEFORE INCOME TAXES	37,927	35,559	23,800
INCOME TAX PROVISION	(13,690)	(13,260)	(8,810)
NET INCOME (LOSS)	$ 24,237	$ 22,299	$ 14,990
WEIGHTED AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic	7,595	7,423	7,231
Diluted	7,765	7,708	7,511
EARNINGS (LOSS) PER SHARE OF COMMON STOCK:
Basic	$ 3.19	$ 3.00	$ 2.07
Diluted	3.12	2.89	2.00
CASH DIVIDENDS DECLARED PER COMMON SHARE	$ 0.72	$ 0.72	$ 0.60