Income Taxes (Narrative) (Details) - USD ($) $ in Thousands			12 Months Ended
	Jan. 01, 2018	Dec. 22, 2017	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2016
Valuation Allowance [Line Items]
Effective tax rate			60.92%	37.10%	33.34%
Income tax rate		35.00%
Blended rate			28.10%
Foreign Tax Credits Generated			$ (55,778)	$ (3,345)	$ (46,566)
Foreign tax credits generated				0
Deferred tax assets			10,509	9,987
Deferred taxes included in income tax expense			1,293	(40)	$ (161)
Additional valuation allowance			600
Unused foreign tax credits			$ 0	0
Foreign tax credits expiration period			10 years
Valuation allowances			$ 16,057	38,967
Valuation allowance, indirect foreign tax credits			32,634	4,302
Unrecognized tax benefit			800	500
Changes in enacted tax rate			309
Accrued interest related to uncertain tax positions			100	100
Accrued penalties related to uncertain tax positions			$ 200	$ 100
Tax Year 2018 [Member]
Valuation Allowance [Line Items]
Income tax rate	21.00%
South Africa [Member]
Valuation Allowance [Line Items]
Income tax rate	28.00%		28.00%	28.00%	28.00%
Deferred taxes included in income tax expense			$ 2,528	$ (473)	$ 3,044
South Korea [Member]
Valuation Allowance [Line Items]
Income tax rate	22.00%
Foreign Tax Credits [Member]
Valuation Allowance [Line Items]
Valuation allowance, indirect foreign tax credits			$ 32,634	$ 4,174