Condensed Consolidated Balance Sheets (Unaudited) (USD $) In Thousands, unless otherwise specified	Sep. 28, 2013	Jun. 29, 2013
Current assets:
Cash and cash equivalents	$ 24,963	$ 30,844
Short-term investments in marketable securities	52,129	29,447
Accounts receivable
Trade (net of reserves and allowances of $2,489 and $2,511)	24,049	22,105
Other receivables	3,726	3,181
Inventories	14,633	14,844
Prepaid expenses and other current assets	2,928	2,705
Deferred income taxes	570	585
Total current assets	122,998	103,711
Property, plant and equipment - net	61,824	60,959
Investments in unconsolidated affiliates	2,585	2,525
Deferred income taxes - non-current	3,283	3,411
Long-term investments in marketable securities	39,121	57,392
Intangible assets (net of accumulated amortization of $10,749 and $9,879)	9,220	9,944
Other assets	8,498	8,625
Total assets	247,529	246,567
Current liabilities:
Accounts payable	11,258	12,184
Accrued liabilities	9,449	8,731
Total current liabilities	20,707	20,915
Industrial development subsidy	7,074	7,263
Deferred income taxes	5,690	5,798
Noncurrent tax liabilities	2,789	2,788
Other long-term liabilities	909	912
Total liabilities	37,169	37,676
Commitments and contingencies (Note 6)
Shareholders' equity:
Common stock and paid in capital - no par value, 60,000,000 shares authorized; shares issued and outstanding: September 28, 2013, 22,767,000; June 29, 2013, 22,813,000	119,562	119,591
Retained earnings	79,454	79,080
Accumulated other comprehensive income, net of tax	11,344	10,220
Total shareholders' equity	210,360	208,891
Total liabilities and shareholders' equity	$ 247,529	$ 246,567