Supplemental Financial Information - Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Accumulated Other Comprehensive Income (Loss)
Cumulative foreign currency translation adjustment	$ 842	$ 1,237
Defined benefit pension obligation	(144)	(144)
Accumulated other comprehensive income	$ 698	$ 1,093

Accumulated adjustment, net of tax, that results from the process of translating subsidiary financial statements and foreign equity investments into the reporting currency from the functional currency of the reporting entity, net of reclassification of realized foreign currency translation gains or losses.

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