CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 42,437	$ 50,422
Prepaid expenses and other current assets	3,014	1,334
Total current assets	45,451	51,756
Property and equipment, net	272	321
Restricted cash	20	20
Intangible assets	46,400	46,400
Goodwill	13,064	13,064
Other assets	232	0
Total assets	105,439	111,561
Current liabilities:
Accounts payable	1,683	1,367
Accrued expenses	5,234	4,746
Other current liabilities	136	0
Total current liabilities	7,053	6,113
Other liabilities	398	313
Deferred tax liability	12,528	12,528
Contingent consideration	47,400	48,400
Commitments and contingencies
Stockholders’ equity:
Preferred stock, $0.001 par value per share; 5,000,000 shares authorized at March 31, 2019 and December 31, 2018 and no shares issued and outstanding at March 31, 2019 and December 31, 2018	0	0
Common stock, $0.001 par value per share; 200,000,000 shares authorized at March 31, 2019 and December 31, 2018 and 77,464,781 and 77,456,180 shares issued and outstanding at March 31, 2019 and December 31, 2018, respectively	77	77
Additional paid-in capital	230,487	230,154
Accumulated deficit	(192,504)	(186,024)
Total stockholders’ equity	38,060	44,207
Total liabilities and stockholders’ equity	$ 105,439	$ 111,561