CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Net loss	$ (6,903,920)	$ (7,814,890)
Adjustments to reconcile net loss to cash used in operating activities:
Depreciation on property and equipment	254,602	282,772
Amortization of intangible assets	0	37,046
Impairment of goodwill and intangible assets of discontinued operations	1,736,208	0
Share-based compensation charges	128,010	219,975
Fair value adjustments of derivative instruments	(87,000)	(106,000)
Fair value adjustments of derivative instruments	0	95,450
Interest on debt obligations	1,116,050	3,000,646
Equity in losses of affiliates	5,998	121,590
Other non-cash items	405,222	(53,910)
Changes in operating assets and liabilities:
Accounts receivable	(357,238)	1,256,769
Inventories	(200,706)	251,244
Other assets	239,191	231,196
Accounts payable	1,516,887	(381,077)
Deterred revenue and other accrued liabilities	27,182	357,040
Net cash used in operating activities	(2,119,514)	(2,502,149)
Cash flows from investing activities:
Purchases and development of property and equipment	(1,245,326)	(218,473)
Net cash used in investing activities	(1,245,326)	(218,473)
Cash flows from financing activities:
Proceeds from issuance of common stock and warrants, net of transaction fees	1,220,398	14,638,529
Borrowings on capital leases	631,582	0
Proceeds from issuance of debt and warrants, net of transaction fees	1,362,500	0
Payments on debt obligations	(320,027)	(4,988,429)
Other	0	(15,000)
Net cash provided by financing activities	2,894,453	9,635,100
Net effect of exchange rate changes on cash	5,951	(1,689)
Net increase (decrease) in cash and cash equivalents	(464,436)	6,912,789
Cash and cash equivalents at beginning of period	2,013,738	3,798,181
Cash and cash equivalents at end of period	1,549,302	10,710,970
Cash and cash equivalents at end of period:
Continuing operations	1,516,799	10,587,080
Discontinued operations	32,503	123,890
Cash and cash equivalents at end of period	$ 1,549,302	$ 10,710,970