CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Cash flows from operating activities:
Net loss	$ (9,206,868)	$ (9,699,758)
Adjustments to reconcile net loss to net cash used in operating activities:
Common stock, stock options and warrants issued as payment for compensation, services rendered and interest expense	2,476,666	2,018,902
Depreciation and amortization	2,170,111	2,203,684
Amortization of preferred stock discount and issuance cost	471,934	676,123
Changes in fair value of derivative liability	(87,291)	262,667
Loss on exit of segment	1,138,006
Write off of acquired in-process research and development		927,000
Non-cash interest expense	335,107	83,207
Contributions paid with common stock		607,363
Bad debt expense (recovery)	347,927	(1,516)
Deferred income taxes	(325,905)	(228,352)
Changes in operating assets and liabilities, net of the effect of acquisitions:
Prepaid expenses and other current assets	(614,672)	(125,791)
Accounts receivable	(4,218,650)	(822,776)
Inventory	(726,303)	(3,050,771)
Unearned revenues	477,635	(573,210)
Other assets	(362,258)
Accounts payable, accrued expenses and other current liabilities	10,230,966	(2,471,865)
Net cash provided by (used in) operating activities	2,106,405	(10,195,093)
Cash flows from investing activities:
Cash received in acquisitions		227,942
Change in restricted cash used as collateral for notes payable		(2,625,344)
Acquisition of property and equipment	(110,071)	(707,224)
Net cash used in investing activities	(110,071)	(3,104,626)
Cash flows from financing activities:
Net proceeds from issuance of capital stock	7,691,059	3,592,723
Repayment of mortgage loan	(52,988)	(2,320)
Proceeds of bank loan		1,518,000
Proceeds from notes payable	223,433	7,249,117
Repayment of notes payable	(66,333)	(2,277,000)
Repayment of debt to related party	(34,673)	(3,000,000)
Repayment of preferred stock	(575,000)
Net cash provided by financing activities	7,185,498	7,080,520
Impact of changes of foreign exchange rates	(52,590)	18,679
Net increase/(decrease) in cash and cash equivalents	9,129,242	(6,200,520)
Cash and cash equivalents at beginning of year	12,642,147	15,612,391
Cash and cash equivalents at end of period	21,771,389	9,411,871
Cash paid during the period for:
Interest	620,000	34,500
Taxes	286,100	1,295,800
Supplemental Schedule of non-cash investing activities
Acquisition of property and equipment		389,300
Capitalized interest	55,400	130,100
Supplemental schedule of non-cash financing activities
Common stock and warrants issued with the acquisition of PCT		17,866,200
Common stock issued pursuant to the redemption of Convertible Redeemable Series E 7% Preferred Stock	525,800	783,900
Common stock issued in payment of dividends for the Convertible Redeemable Series E 7% Preferred Stock	$ 104,200	$ 308,700