Condensed Consolidated Statements of Cash Flows(USD ($))	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
Cash Flows From Operating Activities:
Net loss attributable to the Company	$ (33,792,515)	$ (23,388,120)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property, plant and equipment, and investment in leased property	1,432,698	1,459,159
Amortization of intangible assets	1,704,917	1,726,854
Stock-based compensation	1,576,577	1,500,352
Gain on sale of equity interest in joint venture	(3,234,717)
(Gain) loss on disposal of property, plant and equipment	(55,768)	57,680
Change in fair value of common stock warrant liability	16,171,061	(3,726,667)
Changes in operating assets and liabilities that provide (use) cash:
Accounts receivable	(279,308)	5,728,228
Inventory	(1,218,197)	(2,650,413)
Prepaid expenses and other current assets	(131,670)	341,585
Note receivable	45,399	(585,611)
Accounts payable, accrued expenses, product warranty reserve and other liabilities	(2,065,461)	1,787,625
Deferred revenue	1,902,239	2,201,139
Net cash used in operating activities	(17,944,745)	(15,548,189)
Cash Flows From Investing Activities:
Proceeds from sale of equity interest in joint venture	3,234,717	(292,389)
Purchase of property, plant and equipment	(144,752)
Proceeds from disposal of property, plant and equipment	56,700	57,900
Net cash provided by investing activities	3,146,665	(234,489)
Cash Flows From Financing Activities:
Change in restricted cash	(500,000)
Proceeds from exercise of warrants	2,849,460
Proceeds from issuance of preferred stock	2,595,400
Preferred stock issuance costs	(144,321)
Proceeds from issuance of common stock and warrants	14,807,717	17,192,500
Common stock issuance costs	(1,934,265)	(1,402,230)
Repayment of borrowings under line of credit	(3,380,835)	(4,405,110)
Proceeds from finance obligation	2,600,000
Principal payments on obligations under capital lease and finance obligation	(516,177)
Net cash provided by financing activities	16,376,979	11,385,160
Effect of exchange rate changes on cash	997	2,029
Increase (decrease) in cash and cash equivalents	1,579,896	(4,395,489)
Cash and cash equivalents, beginning of period	9,380,059	13,856,893
Cash and cash equivalents, end of period	$ 10,959,955	$ 9,461,404