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Note 14 - Segment Reporting - Segment Information (Details) - USD ($)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016
Assets		$ 58,978,250	$ 45,604,692
Revenue		41,128,639	20,955,347
Interest Expense		106,280	79,861
Depreciation and Amortization	[1]	867,277	813,657
Capital expenditures		14,890,184	612,493
Pretax earnings/(loss)		7,195,355	(653,186)
Intersegment Eliminations [Member]
Assets		(311,732)	(2,253,550)
Revenue		(1,995,623)	(547,616)
Interest Expense
Depreciation and Amortization
Capital expenditures
Pretax earnings/(loss)
CVD [Member] | Operating Segments [Member]
Assets		54,387,955	43,300,131
Revenue		35,697,372	18,568,132
Interest Expense		106,280	78,322
Depreciation and Amortization		804,900	750,680
Capital expenditures		14,888,801	606,643
Pretax earnings/(loss)		5,227,131	(211,576)
SDC [Member] | Operating Segments [Member]
Assets		4,902,027	4,558,111
Revenue		7,426,890	2,934,831
Interest Expense			1,539
Depreciation and Amortization		62,377	62,978
Capital expenditures		1,383	5,850
Pretax earnings/(loss)		$ 1,968,224	$ (441,610)
[1] Includes amortization expense of $45,645 and $31,356 for the years ending December 31, 2017 and 2016, respectively. Such amortization expense relates to other capitalized and intangible assets.

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The cash outflow associated including the purchases of buildings in the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets.

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