Condensed Consolidated Statement of Cash Flows (Unaudited) (USD $)	6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010
Statement of Cash Flows [Abstract]
Net loss	$ (2,956,957)	$ (1,630,881)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	179,434	216,600
Loss on equipment disposal	96	5,726
Provision for inventory reserves	(73,830)	22,000
Provision for losses on projects	0	15,154
Non-cash stock based compensation expense	186,192	658,139
Changes in assets and liabilities:
Accounts receivable	1,494,828	(884,469)
Other receivable	772	(1,294)
Inventory	498,074	23,420
Prepaid expenses and deposits	223,213	302,204
Accounts payable	(624,364)	151,010
Billings in excess of costs	(4,891)	(39,124)
Accrued expenses, deposits and deferred rent	(881,142)	14,668
Net cash used in operating activities	(1,958,575)	(1,146,847)
CASH FLOWS FROM INVESTING ACTIVITIES:
Purchase of land, building and equipment	(101,630)	(16,498)
Proceeds from disposal of equipment	3,400	14,061
Net cash provided by/used in investing activities	(98,230)	(2,437)
CASH FLOWS FROM FINANCING ACTIVITIES:
Exercise of stock options	23,975	473,177
Net cash provided by financing activities	23,975	473,177
Net decrease in cash and cash equivalents	(2,032,830)	(676,107)
Cash and cash equivalents, beginning of period	8,983,281	9,604,643
Cash and cash equivalents, end of period	$ 6,950,451	$ 8,928,536