Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets:
Cash and cash equivalents	$ 49,458	$ 93,526
Inventory	48,584	28,695
Accounts receivable, net	15,430	8,146
Other current assets	12,142	11,199
Total current assets	125,614	141,566
Property, plant and equipment, net	4,097	4,521
Goodwill	3,208	3,208
Other assets, net	12,732	9,577
Total assets	145,651	158,872
Current liabilities:
Accounts payable and accrued expenses	54,647	45,031
Deferred lease incentive, current portion	244	244
Other current liabilities	158	145
Total current liabilities	55,049	45,420
Convertible senior notes	130,088	125,000
Deferred lease incentive, net of current portion	895	1,018
Deferred tax liability	0	635
Other liabilities	811	894
Total liabilities	186,843	172,967
Commitments and contingencies
Stockholders’ (deficit) equity:
Preferred stock, $0.001 par value per share (5,000,000 shares authorized, no shares issued and outstanding)	0	0
Common stock, $0.001 par value per share (230,000,000 shares authorized, 120,513,208 and 119,272,304 shares issued, 120,433,260 and 119,192,356 shares outstanding at June 30, 2018 and December 31, 2017, respectively)	120	119
Additional paid-in capital	1,000,381	984,681
Treasury stock, at cost, 79,948 shares	(357)	(357)
Accumulated deficit	(1,041,336)	(998,538)
Total stockholders’ deficit	(41,192)	(14,095)
Total liabilities and stockholders’ deficit	$ 145,651	$ 158,872