Note 15 - Acquisitions - Summary Assets Acquired and Liabilities Assumed of Air Enterprises (Details) - USD ($)	Dec. 31, 2018	Dec. 31, 2017	Jun. 01, 2017
Goodwill	$ 9,582,202	$ 2,255,912
Air Enterprises [Member]
Accounts Receivable			$ 4,761,368
Inventory			594,503
Costs in excess of billings			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
Costs in excess of billings			594,545
Accrued Payroll			325,950
Accrued Expense			424,671
Lease Payable			41,533
Total Liabilities Assumed			3,113,317
Net Assets Acquired			$ 10,250,000

Amount of liabilities incurred for costs in excess of billings, assumed at the acquisition date.

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The amount of costs in excess of billings recognized as of the acquisition date.

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Amount of liabilities incurred for accrued payroll, assumed at the acquisition date.

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Amount of liabilities incurred for accrued expenses, assumed at the acquisition date.

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Amount of assets acquired at the acquisition date.

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Amount of capital lease obligation, assumed at the acquisition date.

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Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date.

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Amount of liabilities incurred for goods and services received that are used in an entity's business and related party payables, assumed at the acquisition date.

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Amount of intangible assets, excluding goodwill, acquired at the acquisition date.

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The amount of inventory recognized as of the acquisition date.

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Amount of liabilities assumed at the acquisition date.

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The amount of property, plant, and equipment recognized as of the acquisition date.

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Amount recognized for assets, including goodwill, in excess of (less than) the aggregate liabilities assumed.

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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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