Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 143,134	$ 147,144
Accounts receivable, net	17,524	13,643
Inventory	9,326	3,484
Prepaid expenses and other current assets	2,453	3,789
Total current assets	172,437	168,060
Property and equipment, net	2,408	3,052
Other assets	6,179	1,538
Total assets	181,024	172,650
Current liabilities:
Accounts payable	6,069	3,625
Accrued expenses and other current liabilities	37,281	32,514
Total current liabilities	43,350	36,139
Long-term debt, net	105,013	74,531
Other liabilities	4,978	397
Total liabilities	153,341	111,067
Stockholders' equity:
Common stock, 0.001 par value; 200,000,000 shares authorized at September 30, 2020 and December 31, 2019; 52,080,552 and 45,906,162 shares issued and outstanding at September 30, 2020 and December 31, 2019, respectively	52	46
Additional paid-in capital	531,598	489,565
Accumulated deficit	(503,902)	(427,980)
Accumulated other comprehensive loss	(65)	(48)
Total stockholders' equity	27,683	61,583
Total liabilities and stockholders' equity	$ 181,024	$ 172,650
Shares issued (in shares)	52,080,552	45,906,162