Condensed Consolidated Balance Sheets (Current Period Unaudited) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012	Jun. 30, 2012
Current assets:
Cash	$ 14,577	$ 17,502
Short-term investments	8,124	6,282
Accounts receivable (less allowance for doubtful accounts of $760 and $965, respectively)	33,674	42,167
Inventories	72,205	69,895
Current deferred income tax asset	7,469	7,620
Prepaid expenses and other current assets	8,190	7,764
Total current assets	144,239	151,230
Property, plant and equipment, net	53,167	53,597
Taxes receivable	3,711	3,814
Deferred tax asset, net	29,926	29,842
Intangible assets, net	8,666	8,755
Goodwill	3,034	3,034
Other assets	2,205	1,894
Total assets	244,948	252,166
Current liabilities:
Notes payable and current maturities	1,619	1,800
Accounts payable and accrued expenses	16,161	20,912
Accrued compensation	4,046	7,299
Total current liabilities	21,826	30,011
Deferred tax liabilities	2,882	2,530
Other tax obligations	10,192	10,590
Long-term debt	29,913	29,387
Postretirement benefit and pension obligations	52,782	51,810
Total liabilities	117,595	124,328
Stockholders' equity:
Additional paid-in capital	52,222	51,941
Retained earnings	93,427	94,661
Accumulated other comprehensive loss	(25,089)	(25,534)
Total stockholders' equity	127,353	127,838
Total liabilities and stockholders’ equity	244,948	252,166
Common Class A [Member]
Stockholders' equity:
Common Stock	6,051	6,017
Common Class B [Member]
Stockholders' equity:
Common Stock	$ 742	$ 753