Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Jun. 30, 2013
Current assets:
Cash	$ 16,101	$ 19,755
Short-term investments	8,470	7,657
Accounts receivable (less allowance for doubtful accounts of $707 and $697, respectively)	34,372	37,875
Inventories	65,942	56,501
Current deferred income tax assets	4,965	4,978
Prepaid expenses and other current assets	7,170	7,182
Total current assets	137,020	133,948
Property, plant and equipment, net	51,147	51,200
Long-term taxes receivable	3,770	3,770
Long-term deferred income tax assets, net of current portion	27,388	28,274
Intangible assets, net	7,989	8,222
Goodwill	3,034	3,034
Other assets	2,526	2,346
Total assets	232,874	230,794
Current liabilities:
Notes payable and current maturities of long-term debt	1,535	1,557
Accounts payable and accrued expenses	16,845	17,084
Accrued compensation	5,904	5,304
Total current liabilities	24,284	23,945
Long-term debt, net of current portion	20,596	24,252
Long-term taxes payable	10,484	10,514
Deferred tax liabilities	2,458	2,182
Postretirement benefit and pension obligations	44,516	42,386
Other non-current liability		773
Total liabilities	102,338	104,052
Stockholders' equity:
Total stockholders' equity	130,536	126,742
Total liabilities and stockholders’ equity	232,874	230,794
Common Class A [Member]
Stockholders' equity:
Common Stock	6,142	6,077
Additional paid-in capital	53,812	52,613
Retained earnings	93,380	91,778
Accumulated other comprehensive loss	(23,597)	(24,476)
Common Class B [Member]
Stockholders' equity:
Common Stock	$ 799	$ 750