Note 2 - Summary of Significant Accounting Policies - New Accounting Pronouncements (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jul. 01, 2018	Jun. 30, 2018	Jun. 30, 2017
Accounts receivable, net	$ 59,781	$ 55,544	$ 50,609
Inventories, net	49,580	46,827	50,994	$ 50,994
Other long-term assets, net	9,420	9,609	9,786
Retained earnings	$ 16,168	15,715	$ 15,124
Restatement Adjustment [Member]
Accounts receivable, net		4,935
Inventories, net		(4,167)
Other long-term assets, net		(177)
Retained earnings		$ 591

The aggregate of amounts due from customers or clients, within one year of the balance sheet date (or one operating cycle, if longer), for goods or services that have been delivered or sold in the normal course of business and an amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date within one year of the balance sheet, reduced to their estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection and net of any write-downs taken for collection uncertainty on the part of the holder, respectively.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3,4)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Data Type:	xbrli:monetaryItemType
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