CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
CASH FLOWS FROM OPERATING ACTIVITIES:
Net loss	$ (3,503,477)	$ (6,360,103)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	192,970	338,315
Impairment loss on property held for sale	720,000	0
(Gain) loss on equipment disposal	(118,967)	36,525
Provision for inventory reserves	0	(73,830)
Non-cash stock based compensation expense	62,849	256,124
Changes in assets and liabilities:
Accounts receivable	446,780	1,527,548
Other receivable	99,447	(50,730)
Inventory	74,793	615,700
Prepaid expenses and other assets	351,918	126,291
Accounts payable	(201,400)	(551,679)
Billings in excess of costs	(2,152)	(4,353)
Accrued expenses and deposits	(754,153)	(696,723)
Net cash used in operating activities	(2,631,392)	(4,836,915)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of property and equipment	(15,141)	(237,206)
Proceeds from disposal of equipment	1,505,695	4,000
Net cash provided by (used in) investing activities	1,490,554	(233,206)
CASH FLOWS FROM FINANCING ACTIVITIES:
Payment of cash dividends	(174,155)	0
Proceeds from the exercise of stock otions and warrants	0	23,975
Net cash provided by (used in) financing activities	(174,155)	23,975
Net decrease in cash and cash equivalents	(1,314,993)	(5,046,146)
Cash and cash equivalents, beginning of period	3,937,135	8,983,281
Cash and cash equivalents, end of period	$ 2,622,142	$ 3,937,135