Note 14 - Income Taxes (Details) - Table of deferred tax assets and deferred tax liabilities (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Deferred tax assets:
Inventories	$ 1,465	$ 1,737
Deferred compensation	474	445
Retirement benefits	1,482	2,426
Postretirement benefits	789	870
Equity-based compensation	4,100	4,248
Nondeductible reserves	781	776
Federal and state tax attribute carryforwards	4,633	4,542
State net operating loss carryforwards	356	389
Gross deferred tax assets	14,080	15,433
Valuation allowance	(4,652)	(4,592)
Net deferred tax assets	9,428	10,841
Deferred tax liabilities:
Property, plant and equipment, principally due to differences in depreciation	(4,772)	(5,179)
Intangible assets including goodwill	(5,507)	(5,150)
Gross deferred tax liabilities	(10,279)	(10,329)
Net deferred tax assets	(851)	512
Current deferred tax asset	1,820	1,984
Long-term deferred tax liability	$ (2,671)	$ (1,472)