Note 15 - Acquisitions (Tables)

12 Months Ended

Dec. 31, 2018

Air Enterprises [Member]

Notes Tables

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

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

CAD Enterprises, Inc. [Member]

Notes Tables

Schedule of Recognized Identified Assets Acquired and Liabilities Assumed [Table Text Block]

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