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Consolidated Statements of Cash Flows (USD $)
 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Cash flows from operating activities:    
Net loss $ (42,629,781) $ (20,237,649)
Loss from discontinued operations 27,412,679 34,024
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 3,555,011 6,656,953
Depreciation and amortization 774,773 922,975
Amortization of preferred stock discount and issuance cost 872,736 1,329,187
Changes in fair value of derivative liability (111,517) (295,356)
Write off of acquired in-process research and development 0 927,000
Contributions paid with common stock 0 607,363
Bad debt expense (recovery) 233,800 (23,395)
Deferred income taxes 0 (178,770)
Changes in operating assets and liabilities, net of the effect of acquisitions:    
Prepaid expenses and other current assets (195,927) 187,687
Accounts receivable (524,115) (459,809)
Inventory (513,598) (810,728)
Unearned revenues 497,613 1,153,447
Other assets (180,000) 97,248
Accounts payable, accrued expenses and other current liabilities 963,948 961,572
Net cash used in operating activities - continuing operations (9,844,378) (9,128,251)
Net cash provided by (used in) operating activities - discontinued operations 8,992,032 (4,137,269)
Net cash used in operating activities (852,346) (13,265,520)
Cash flows from investing activities:    
Cash received in acquisitions 0 227,942
Change in restricted cash used as collateral for notes payable 0 (500)
Acquisition of property and equipment (176,011) (387,908)
Net cash used in investing activities - continuing operations (176,011) (160,466)
Net cash used in investing activities - discontinued operations (2,140,792) (6,256,240)
Net cash used in investing activities (2,316,803) (6,416,706)
Cash flows from financing activities:    
Net proceeds from exercise of options 0 7,100
Net proceeds from issuance of capital stock 9,951,227 5,907,723
Repayment of mortgage loan (93,755) (64,366)
Proceeds from notes payable 223,433 149,766
Repayment of notes payable (159,460) (234,170)
Repayment of debt to related party 0 (3,000,000)
Repayment of preferred stock (1,391,926) 0
Payment of dividend (31,702) 0
Net cash provided by financing activities - continuing operations 8,497,817 2,766,053
Net cash provided by financing activities - discontinued operations 229,176 6,083,610
Net cash provided by financing activities 8,726,993 8,849,663
Impact of changes of foreign exchange rates (41,506) 70,582
Net increase/(decrease) in cash and cash equivalents 5,516,338 (10,761,981)
Cash and cash equivalents at beginning of year 12,745,432 15,612,391
Cash and cash equivalents at end of period 18,261,770 4,850,410
Less cash and cash equivalents of discontinued operations at end of period 16,149,188 2,875,232
Cash and cash equivalents of continuing operations at end of period 2,112,582 1,975,178
Cash paid during the period for:    
Interest 1,243,700 1,333,800
Taxes 811,500 1,634,500
Supplemental Schedule of non-cash investing activities:    
Acquisition of property and equipment 0 1,283,400
Capitalized interest 106,400 212,000
Supplemental schedule of non-cash financing activities    
Common stock and warrants issued with the acquisition of PCT 0 17,866,200
Common stock issued pursuant to the redemption of Convertible Redeemable Series E 7% Preferred Stock 717,700 1,959,600
Common stock issued in payment of dividends for the Convertible Redeemable Series E 7% Preferred Stock 130,700 475,200
Dividend to related party reinvested as loan payable $ 0 $ 11,726,000