Note 11 - Income Tax (Details) - Deferred Income Taxes (USD $)	Jun. 30, 2014	Jun. 30, 2013
Deferred Income Taxes and Other Assets [Abstract]
Inventories	$ 3,596,000	$ 2,954,000
Employee benefits (other than pension)	1,331,000	827,000
Book reserves	1,244,000	1,435,000
Other	385,000	313,000
Total current deferred tax assets	6,556,000	5,529,000
Valuation allowance	(415,000)	(551,000)
Current deferred tax asset	6,141,000	4,978,000
Federal NOL, carried forward	6,150,000	6,715,000
State NOL, various carryforward periods	1,181,000	1,178,000
Foreign NOL, various carryforward periods	1,042,000	1,574,000
Foreign tax credit carryforward, expiring 2017 – 2023	3,754,000	4,398,000
Pension benefits	10,098,000	10,889,000
Retiree medical benefits	2,218,000	4,144,000
Intangibles	2,178,000	2,643,000
Other	506,000	721,000
Total long-term deferred tax assets	27,127,000	32,262,000
Valuation allowance	(2,889,000)	(3,988,000)
Long-term deferred tax asset	24,238,000	28,274,000
Depreciation	(2,037,000)	(2,182,000)
Long-term deferred tax liabilities	(2,037,000)	(2,182,000)
Net deferred tax assets	28,342,000	31,070,000
Long-term assets	24,238,000	28,274,000
Long-term liabilities	(2,037,000)	(2,182,000)
	$ 22,201,000	$ 26,092,000