Note 10 - Acquisitions - Summary Assets Acquired and Liabilities Assumed (Details) - USD ($)	Jun. 30, 2017	Jun. 01, 2017	Sep. 30, 2016
Goodwill	$ 2,409,048		$ 1,777,656
Air Enterprises [Member]
Accounts Receivable		$ 4,761,368
Inventory		594,503
Costs in excess of billings and estimated costs		3,980,824
Fixed Assets		2,112,120
Prepaid and Other Assets		53,110
Intangibles Assets		1,230,000
Goodwill		631,392
Total Assets Acquired		13,363,317
Accounts Payable		1,726,618
Billings in Excess of costs and earnings		594,545
Accrued Payroll and related expenses		325,950
Accrued Expense		424,671
Lease Payable		41,533
Total Liabilities Assumed		3,113,317
Net Assets Acquired		$ 10,250,000