Consolidated Statements Of Cash Flows (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
OPERATING ACTIVITIES:
Net income (loss)	$ 13,068	$ 10,417	$ 10,801
Adjustments to reconcile net income (loss) to net cash provided by (used in) operating activities:
Depreciation	2,835	2,690	2,986
Deferred income taxes	23	54	(963)
Stock-based compensation expense	1,056	1,014	781
Provision for losses on accounts receivable	(150)	870	920
Other non-cash, net	7	224	218
Gain on disposition of capital assets	(34)	(185)	(9)
Changes in operating assets and liabilities:
Trade receivables	(2,000)	3,427	(5,386)
Inventories	(9,009)	(1,043)	1,207
Other current assets	50	(557)	2,837
Other assets	(308)	(270)	(18)
Accounts payable - trade	2,699	(841)	994
Accrued liabilities	572	(2,541)	3,618
Other long-term liabilities	(174)	367	1,028
Deferred compensation	342	174	105
Net cash provided by operating activities	8,977	13,800	19,119
INVESTING ACTIVITIES:
Purchases of investments	(777)	(698)	(721)
Proceeds from sales of investments	405	410	359
Proceeds from sale of capital assets	34	187	34
Capital expenditures	(10,939)	(2,573)	(1,251)
Net cash (used in) provided by investing activities	(11,277)	(2,674)	(1,579)
FINANCING ACTIVITIES:
(Repayments of) proceeds from short-term borrowings, net			(10,000)
Dividends paid	(2,535)	(1,839)	(1,320)
Proceeds from issuance of common stock	916	324	344
Net cash used in financing activities	(1,619)	(1,515)	(10,976)
Increase (decrease) in cash and cash equivalents	(3,919)	9,611	6,564
Cash and cash equivalents at beginning of year	17,889	8,278	1,714
Cash and cash equivalents at end of year	13,970	17,889	8,278
SUPPLEMENTAL INFORMATION CASH PAID DURING THE PERIOD FOR:
Interest			439
Income taxes paid (refunded)	$ 6,237	$ 7,647	$ 3,587