Consolidated Balance Sheets - USD ($) $ in Thousands		Jun. 30, 2016	Jun. 30, 2015
Common Class A [Member]
Stockholders’ equity:
Common stock		$ 6,250	$ 6,224
Common Class B [Member]
Stockholders’ equity:
Common stock		773	789
Cash		19,794	11,108
Short-term investments			7,855
Accounts receivable (less allowance for doubtful accounts of $887 and $612, respectively)		34,367	40,311
Inventories		56,321	63,003
Current deferred tax asset		4,518	4,554
Prepaid expenses and other current assets		5,911	6,582
Total current assets	[1]	120,911	133,413
Property, plant and equipment, net		41,010	44,413
Taxes receivable		2,655	3,383
Deferred tax assets, net		25,284	18,803
Intangible assets, net		6,490	7,125
Goodwill		3,034	3,034
Other assets		2,214	2,101
Total assets		201,598	212,272
Notes payable and current maturities of long-term debt		1,543	1,552
Accounts payable		8,981	9,471
Accrued expenses		6,372	7,011
Accrued compensation		4,922	5,565
Total current liabilities		21,818	23,599
Deferred tax liabilities		187	1,548
Other tax obligations		3,813	4,607
Long-term debt, net of current portion		17,109	18,552
Postretirement benefit and pension obligations		67,158	49,536
Total liabilities		110,085	97,842
Additional paid-in capital		55,227	54,869
Retained earnings		81,228	98,164
Accumulated other comprehensive loss		(51,965)	(45,616)
Total stockholders’ equity		91,513	114,430
Total liabilities and stockholders’ equity		$ 201,598	$ 212,272

[1] Current assets primarily consist of accounts receivable, inventories and prepaid expenses. Assets not allocated to the segments include cash and cash equivalents, deferred income taxes, and other non-current assets.