Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
CURRENT ASSETS:
Cash and cash equivalents	$ 266,294	$ 81,468
Accounts receivable	822	485
Inventories, net	43,519	42,887
Prepaid expenses and other current assets	11,087	8,267
Other receivables	1,304	4,991
Total current assets	323,026	138,098
Restricted cash	2,371	3,966
Property and equipment, net	239,002	130,961
Other noncurrent assets	399	382
TOTAL ASSETS	564,798	273,407
CURRENT LIABILITIES:
Accounts payable	41,203	49,549
Accrued expenses and other current liabilities	41,496	40,911
Deferred revenue	19,762	24,278
Total current liabilities	102,461	114,738
Long-term debt	124,640	44,533
Facility financing obligation	69,663	49,809
Other noncurrent liabilities	7,837	2,858
TOTAL LIABILITIES	304,601	211,938
Convertible preferred stock, par value of $0.0001 per share — 10,000,000 and 17,371,402 shares authorized as of September 30, 2017 and December 31, 2016, respectively; 0 issued and outstanding as of September 30, 2017 and 14,500,938 issued and outstanding as of December 31, 2016; aggregate liquidation preference of $0 as of September 30, 2017 and $195,317 as of December 31, 2016		194,869
STOCKHOLDERS’ EQUITY (DEFICIT):
Additional paid-in capital	569,755	5,147
Accumulated deficit	(309,577)	(138,554)
TOTAL STOCKHOLDERS’ EQUITY (DEFICIT)	260,197	(133,400)
TOTAL LIABILITIES, CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS’ EQUITY (DEFICIT)	564,798	273,407
Class A
STOCKHOLDERS’ EQUITY (DEFICIT):
Common Stock	3
Class B
STOCKHOLDERS’ EQUITY (DEFICIT):
Common Stock	$ 16	$ 7