NOTE 5 - COSTS AND ESTIMATED EARNINGS ON UNCOMPLETED CONTRACTS - Information relating to uncompleted contracts - (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Jun. 30, 2018
Notes to Financial Statements
Costs incurred on uncompleted contracts	$ 449	$ 449
Estimated earnings	742	309
Costs and estimated earnings on uncompleted contracts	1,191	758
Less: Billings to date	856	671
Net billings in excess of costs and estimated earnings on uncompleted contracts	$ 335	$ 87

Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings which is expected to be collected within one year or the normal operating cycle, if longer.

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.3(c)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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