Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Mar. 31, 2016	Jun. 30, 2015
Common Class A [Member]
Stockholders' equity:
Common stock	$ 6,237	$ 6,224
Common Class B [Member]
Stockholders' equity:
Common stock	773	789
Cash	$ 22,231	11,108
Short-term investments		7,855
Accounts receivable (less allowance for doubtful accounts of $746 and $612, respectively)	$ 31,738	40,311
Inventories	57,663	63,003
Current deferred income tax assets	4,274	4,554
Prepaid expenses and other current assets	5,897	6,582
Total current assets	121,803	133,413
Property, plant and equipment, net	42,555	44,413
Income taxes receivable	2,730	3,383
Deferred income tax assets, net of current portion	18,573	18,803
Intangible assets, net	6,647	7,125
Goodwill	3,034	3,034
Other assets	2,185	2,101
Total assets	197,527	212,272
Notes payable and current maturities of long-term debt	1,531	1,552
Accounts payable	10,415	9,471
Accrued expenses	5,347	7,011
Accrued compensation	4,022	5,565
Total current liabilities	21,315	23,599
Long-term debt, net of current portion	17,500	18,552
Other income tax obligations	4,615	4,607
Deferred income tax liabilities	1,441	1,548
Postretirement benefit and pension obligations	46,081	49,536
Total liabilities	90,952	97,842
Additional paid-in capital	55,020	54,869
Retained earnings	96,933	98,164
Accumulated other comprehensive loss	(52,388)	(45,616)
Total stockholders' equity	106,575	114,430
Total liabilities and stockholders’ equity	$ 197,527	$ 212,272