Annual report pursuant to Section 13 and 15(d)

Accounts Receivable (Schedule of Amounts are Included in Consolidated Balance Sheets) (Details)

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Accounts Receivable (Schedule of Amounts are Included in Consolidated Balance Sheets) (Details) - USD ($)
$ in Thousands
Jun. 30, 2017
Jun. 30, 2016
Receivables [Abstract]    
Costs and estimated earnings in excess of billings (Other current assets) $ 86
Billings in excess of costs on uncompleted contracts (2,146)
Ending balance $ (2,060)