Supplementary Balance Sheet Information, Other Long-Term Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Jun. 30, 2016
Other Long-Term Liabilities [Abstract]
Pension liability, net of funded assets	$ 33,556	$ 33,550
Forgivable government grants	7,460	7,719
Deferred revenue and deposits	7,871	8,106
Other long-term liabilities, net	18,983	19,391
Total other long-term liabilities	$ 67,870	$ 68,766