Note 11 - Income Taxes - Deferred Income Taxes (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Jun. 30, 2018
Depreciation and amortization	$ (35,420)	$ (39,775)
Withholding Taxes	(5,606)	(7,833)
Total deferred tax liability	(41,026)	(47,608)
Accrued compensation	2,280	2,657
Accrued expenses and reserves	3,967	4,808
Pension	18,228	13,522
Inventory	927	1,613
Other	355	452
Net operating loss and credit carry forwards	17,939	8,668
Total deferred tax asset	43,696	31,720
Less: Valuation allowance	(11,354)	(3,482)
Net deferred tax liability	$ (8,684)	$ (19,370)