Note 15 - Segment Reporting (Detail) - Information regarding the Company’s segments (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Assets	$ 42,525,261		$ 38,548,978
Revenue	22,157,737		30,993,885
Interest Expense	204,874		182,969
Depreciation and amortization	515,215	[1]	597,040	[1]
Capital expenditures	11,796,740		204,935
Pretax earnings (loss)	400,092		4,787,640
CVD [Member]
Assets	43,872,295		40,538,740
Revenue	19,149,704		26,860,243
Interest Expense	195,861		144,534
Depreciation and amortization	442,227		525,965
Capital expenditures	11,767,024		158,494
Pretax earnings (loss)	(18,722)		3,782,977
SDC [Member]
Assets	4,628,432		3,927,306
Revenue	4,394,945		6,097,137
Interest Expense	9,013		38,435
Depreciation and amortization	72,988		71,075
Capital expenditures	29,716		46,441
Pretax earnings (loss)	418,814		1,004,663
Intersegment Elimination [Member]
Assets	(5,975,466)		(5,917,068)
Revenue	$ (1,386,912)		$ (1,963,495)

[1] Includes amortization expense of $14,096 and $136,704 for the years ending December 31, 2012 and 2011, respectively. Such amortization expense relates to other capitalized and intangible assets.