Contracts in Process (Narrative) (Details) - USD ($)	Jun. 30, 2018	Jun. 30, 2017
Contractors [Abstract]
Progress payments	$ 102,924	$ 1,366,504
Costs relating to contracts that may not be completed within the next year	$ 1,597,739	$ 1,635,661

Amount of receivable reflecting the cost incurred on uncompleted contracts in excess of related billings which is expected to be collected after one year or beyond 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),(4))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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