Consolidated Statements of Cash Flows (USD $)	12 Months Ended
	Dec. 31, 2012		Dec. 31, 2011
Cash flows from operating activities:
Net income	$ 435,586		$ 3,779,123
Adjustments to reconcile net income to net cash (used in) provided by operating activities
Stock-based compensation	234,858		290,598
Loss on sale of building	693,818
Gain on sale of other fixed assets	(3,288)
Depreciation and amortization	515,215	[1]	597,040	[1]
Deferred income tax expense	(178,307)		433,179
Bad debt provision	6,537		6,449
(Increase)/decrease in operating assets
Accounts receivable	(858,082)		(760,855)
Cost in excess of billings on uncompleted contracts	680,720		(1,752,135)
Inventories, net	464,168		760,390
Other current assets	(41,635)		(14,534)
(Decrease)/increase in operating liabilities
Billings in excess of costs and estimated earnings on uncompleted contracts	(1,211,305)		(636,481)
Accounts payable	106,004		495,404
Accrued expenses	(271,888)
Deferred revenue	(754,562)		989,593
Total adjustments	(617,747)		408,648
Net cash (used in) provided by operating activities	(182,161)		4,187,771
Cash flows from investing activities:
Restricted cash	200,000		(1,000,000)
Capital expenditures	(11,796,740)		(204,935)
Deposits	322,281		(360,000)
Net cash (used in) investing activities	(9,670,636)		(1,564,935)
Cash flows from financing activities
Net proceeds from issuance of common stock (Note 11)			9,387,666
Net proceeds from stock options exercised	286,547		473,973
Proceeds from long-term debt	6,000,000		2,100,000
Payments of long-term debt	(848,953)		(2,697,038)
Net cash provided by financing activities	5,437,594		9,264,601
Net (decrease)/increase in cash and cash equivalents	(4,415,203)		11,887,437
Cash and cash equivalents at beginning of year	18,136,527		6,249,090
Cash and cash equivalents at end of year	13,721,324		18,136,527
Supplemental disclosure of cash flow information:
Income taxes paid	451,525		813,336
Interest paid	204,874		182,969
Building [Member]
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	1,582,323
Other Fixed Assets [Member]
Cash flows from investing activities:
Proceeds from sale of property, plant and equipment	$ 21,500

[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.