Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash Flows From Operating Activities:
Net loss attributable to the Company	$ (24,882)	$ (20,277)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property, plant and equipment, and leased property	1,528	969
Amortization of intangible assets	295	722
Stock-based compensation	4,377	3,435
Amortization of debt issuance costs	307
Loss (gain) on disposal of property, plant and equipment and leased property	41	(2)
Change in estimate	(1,071)
Change in fair value of common stock warrant liability	(2,734)	(2,436)
Changes in operating assets and liabilities that provide (use) cash, net of effects of acquisitions:
Accounts receivable	9,973	3,571
Inventory	(2,176)	(8,153)
Prepaid expenses and other assets	(2,556)	(488)
Note receivable	33	32
Accounts payable, accrued expenses, product warranty reserve and other liabilities	6,577	(1,145)
Accrual for loss contracts related to service	(3,559)
Deferred revenue	(1,914)	(483)
Net cash used in operating activities	(15,761)	(24,255)
Cash Flows From Investing Activities:
Purchase of property, plant and equipment	(2,525)	(1,388)
Purchase for construction of leased property	(26,317)
Proceeds from disposal of property, plant and equipment and leased property		2
Net cash used in investing activities	(28,842)	(1,386)
Cash Flows From Financing Activities:
Change in restricted cash	(60)	(11,134)
Proceeds from exercise of warrants	111
Proceeds from exercise of stock options	19	131
Proceeds from borrowing of long-term debt, net of transaction costs	23,875
Proceeds from short-term borrowing, net of transaction costs	23,874
Principal payments on short-term borrowings	(25,000)
Increase (decrease) in finance obligations	23,795	(422)
Net cash provided by (used in) financing activities	46,614	(11,425)
Effect of exchange rate changes on cash	68
Increase (decrease) in cash and cash equivalents	2,079	(37,066)
Cash and cash equivalents, beginning of period	63,961	146,205
Cash and cash equivalents, end of period	66,040	109,139
Other Supplemental Cash Flow Information:
Cash paid for interest	$ 1,311	$ 176