Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 142,666	$ 163,885
Prepaid expenses and other current assets	5,353	3,765
Total current assets	148,019	167,650
Property and equipment, net	633	187
Goodwill	17,260	17,260
Other assets	5,578	369
Total assets	171,490	185,466
Current liabilities:
Accounts payable	3,185	4,352
Accrued expenses	8,459	8,165
Other current liabilities	683	308
Total current liabilities	12,327	12,825
Liability related to sale of future royalties	53,073	49,969
Other long-term liabilities	4,418	35
Total liabilities	69,818	62,829
Stockholders' Equity:
Common stock, $0.01 par value per share ? 30,000,000 authorized at September 30, 2019 and December 31, 2018; 12,685,326 and 11,969,928 issued and outstanding at September 30, 2019 and December 31, 2018	126	120
Additional paid in capital	242,638	214,694
Accumulated other comprehensive income	10,573	4,293
Accumulated deficit	(151,665)	(96,470)
Total stockholders' equity	101,672	122,637
Total liabilities and stockholders' equity	$ 171,490	$ 185,466