Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Net loss	$ (63,528)	$ (24,365)
Adjustments to reconcile net loss to net cash used in operating activities:
Depreciation and amortization	5,983	6,850
Amortization of Leased Asset	2,035	2,626
Stock-based compensation	7,637	9,785
Deferred income taxes	6	(38)
Restructuring Costs	0	201
Amortization of Debt Discount (Premium)	2,373	2,142
Other	672	(329)
Changes in operating assets and liabilities:
Accounts receivable, net	149,263	11,260
Inventory	(27,786)	(2,512)
Prepaid expenses and other assets	1,272	5,761
Accounts payable and other liabilities	(144,517)	(74,640)
Deferred revenue	(1,694)	(1,323)
Net Cash Provided by (Used in) Operating Activities	(68,284)	(64,984)
Investing activities:
Purchases of property and equipment, net	(795)	(724)
Purchases of marketable securities	0	(6,948)
Maturities of marketable securities	7,330	4,400
Sale of marketable securities	0	1,889
Payments for (Proceeds from) Other Investing Activities	438	0
Net cash provided by (used in) investing activities	6,097	(1,383)
Financing activities:
Proceeds from issuance of common stock	1,887	3,812
Payment, Tax Withholding, Share-based Payment Arrangement	(2,003)	(2,673)
Net cash provided by financing activities	29,884	1,139
Proceeds from Bank Debt	30,000	0
Effect of exchange rate changes on cash and cash equivalents	(563)	74
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents, Period Increase (Decrease), Including Exchange Rate Effect	(32,866)	(65,154)
Cash and cash equivalents at beginning of period	150,301	152,095
Cash and cash equivalents at end of period	$ 117,435	$ 86,941