Note 16 - Related Party Transactions - Assets Recorded With Related Parties (Details) - USD ($) $ in Thousands	Jun. 30, 2018	Jun. 30, 2017
Wesco International [Member]
Assets recorded with related parties	$ 16

For an unclassified balance sheet, amount of receivables arising from transactions with related parties.

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Name:	us-gaap_AccountsReceivableRelatedParties
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant