Amount after accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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-Name Accounting Standards Codification
-Topic 210
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
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-Subparagraph (SX 210.7-03(a)(8))
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-Name Accounting Standards Codification
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Name:	us-gaap_PropertyPlantAndEquipmentNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

Note 12 - Facility Closure (Details Textual) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2018	Jun. 30, 2016	Dec. 31, 2017	Jun. 30, 2017
Property, Plant and Equipment, Net, Ending Balance	$ 38,659			$ 39,345
Vacated Facility at Mt. Airy, North Carolina [Member]
Impairment of Long-Lived Assets to be Disposed of		$ 4,100
Property, Plant and Equipment, Net, Ending Balance			$ 2,000
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal	$ 100