Consolidated Balance Sheets (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Jun. 30, 2013
Current assets:
Cash	$ 16,233	$ 19,755
Short-term investments	8,723	7,657
Accounts receivable (less allowance for doubtful accounts of $704 and $697, respectively)	43,712	37,875
Inventories	65,582	56,501
Current deferred tax asset	6,141	4,978
Prepaid expenses and other current assets	6,615	7,182
Total current assets	147,006	133,948
Property, plant and equipment, net	51,537	51,200
Taxes receivable	3,775	3,770
Deferred tax assets, net	24,238	28,274
Intangible assets, net	7,760	8,222
Goodwill	3,034	3,034
Other assets	1,898	2,346
Total assets	239,248	230,794
Current liabilities:
Notes payable and current maturities of long-term debt	10,548	1,557
Accounts payable	9,980	7,532
Accrued expenses	8,516	9,552
Accrued compensation	6,642	5,304
Total current liabilities	35,686	23,945
Deferred tax liabilities	2,037	2,182
Other tax obligations	10,818	10,514
Long-term debt, net of current portion	10,804	24,252
Postretirement benefit and pension obligations	43,589	42,386
Other non-current liability		773
Total liabilities	102,934	104,052
Stockholders’ equity:
Additional paid-in capital	54,063	52,613
Retained earnings	95,715	91,778
Accumulated other comprehensive loss	(20,425)	(24,476)
Total stockholders’ equity	136,314	126,742
Total liabilities and stockholders’ equity	239,248	230,794
Common Class A [Member]
Stockholders’ equity:
Common Stock	6,166	6,077
Common Class B [Member]
Stockholders’ equity:
Common Stock	$ 795	$ 750