CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 31,760	$ 45,261
Accounts and other receivables, net	8,855	627
Prepaid expenses and other current assets	3,887	1,434
Inventory	2,559	279
Total current assets	47,061	47,601
Property and equipment, net	386	288
Operating lease right-of-use assets	3,186	0
Intangible assets, net	28,284	30,129
Restricted cash	150	150
Total assets	79,067	78,168
Current liabilities:
Accounts payable	5,461	2,640
Accrued expenses	4,446	3,789
Accrued development milestone		15,000
Deferred revenue		30
Operating lease liabilities - current portion	461	0
Total current liabilities	10,368	21,459
Long-term debt	46,733	17,621
Operating lease liabilities - noncurrent	3,028	0
Other long-term liabilities	3,000	1,455
Total liabilities	63,129	40,535
Contingencies (Note 13)
Stockholders' equity:
Preferred stock, $.001 par value, 5,000,000 shares authorized, no shares issued and outstanding		0
Common stock, $.001 par value, 150,000,000 shares authorized at September 30, 2019 and December 31, 2018; 108,029,244 and 95,372,236 shares issued and outstanding at September 30, 2019 and December 31, 2018, respectively	108	95
Additional paid-in capital	469,866	445,192
Accumulated deficit	(454,876)	(408,493)
Accumulated other comprehensive income	840	839
Total stockholders' equity	15,938	37,633
Total liabilities and stockholders' equity	$ 79,067	$ 78,168