Inventory - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018
Inventory Disclosure [Abstract]
Inventory valuation reserves	$ 393	$ 560

Amount of valuation reserve for inventory.

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Name:	us-gaap_InventoryValuationReserves
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant