Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
Cash Flows From Operating Activities:
Net loss attributable to the Company	$ (61,268)	$ (107,641)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation of property, plant and equipment, and leased property	8,592	6,596
Amortization of intangible assets	511	443
Stock-based compensation	6,389	7,288
Provision for bad debts	746
Amortization of debt issuance costs and discount on convertible senior notes	4,436	496
Provision for common stock warrants	7,932	34,570
Change in fair value of common stock warrant liability	(3,308)	16,454
Income tax benefit	(7,581)
Changes in operating assets and liabilities that provide (use) cash:
Accounts receivable	(9,390)	(40,946)
Inventory	12,554	(14,747)
Prepaid expenses and other assets	1,272	(590)
Accounts payable, accrued expenses, and other liabilities	(7,609)	6,524
Accrual for loss contracts related to service		(752)
Deferred revenue	5,082	11,011
Net cash used in operating activities	(41,642)	(81,294)
Cash Flows From Investing Activities:
Purchases of property, plant and equipment	(3,268)	(1,820)
Purchase of intangible asset	(879)
Purchases for construction of leased property	(13,381)	(26,471)
Net cash used in investing activities	(17,528)	(28,291)
Cash Flows From Financing Activities:
Proceeds from exercise of warrants, net of transaction costs		17,636
Proceeds from exercise of stock options	92	40
Payments for redemption of preferred stock		(3,700)
Proceeds from public offerings, net of transaction costs	4,912	20,664
Proceeds from issuance of convertible senior notes, net	95,856
Purchase of capped call and common stock forward	(43,500)
Proceeds from borrowing of long-term debt, net of transaction costs		20,147
Principal payments on long-term debt	(11,944)	(4,261)
Proceeds from sale/leaseback transactions accounted for as finance obligations	32,938	26,280
Repayments of finance obligations	(25,138)	(11,616)
Net cash provided by financing activities	53,216	65,190
Effect of exchange rate changes on cash	(49)	286
Decrease in cash, cash equivalents and restricted cash	(6,003)	(44,109)
Cash, cash equivalents, and restricted cash beginning of period	68,055	100,636
Cash, cash equivalents, and restricted cash end of period	62,052	56,527
Other Supplemental Cash Flow Information:
Cash paid for interest	10,338	6,205
Summary of non-cash investing and financing activity:
Recognition of right of use asset	58,577
Net transfers between inventory, leased assets and property, plant and equipment	17,206
Increase in property, plant and equipment financed as long-term debt or financing leases	$ 408
Conversion of preferred stock to common stock		$ 8,222