Note 15 - Acquisitions - Summary Assets Acquired and Liabilities Assumed of CAD Enterprises (Details) - USD ($)	Dec. 31, 2018	Jul. 01, 2018	Dec. 31, 2017
Goodwill	$ 9,582,202		$ 2,255,912
CAD Enterprises, Inc. [Member]
Cash		$ 790,417
Accounts Receivable		2,221,635
Inventory		2,098,732
Fixed Assets		10,867,500
Prepaid and Other Assets		35,264
Intangibles Assets		3,000,000
Goodwill		7,326,289
Total Assets Acquired		26,339,837
Accounts Payable		1,846,247
Accrued Payroll and related expenses		224,139
Accrued Expense		518,816
Deferred Income Taxes		2,750,635
Total Liabilities Assumed		5,339,837
Net Assets Acquired		$ 21,000,000

Amount of assets and goodwill acquired at 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 currency on hand as well as demand deposits with banks or financial institutions, acquired at the acquisition date. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates.

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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 deferred tax liability attributable to taxable temporary differences 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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