CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 42,463	$ 48,121
Prepaid expenses and other current assets	2,420	6,326
Total current assets	44,883	54,447
Restricted cash	20	20
Property and equipment, net of accumulated depreciation of $789 and $758, respectively	207	238
Intangible assets	46,400	46,400
Goodwill	13,064	13,064
Other assets	91	196
Total Assets	104,665	114,365
Current liabilities:
Accounts payable	2,068	1,902
Accrued expenses	4,893	6,169
Other current liabilities	405	446
Total current liabilities	7,366	8,517
Deferred tax liability	12,528	12,528
Total Liabilities	86,214	141,065
Commitments and contingencies
Stockholders’ Equity (Deficit):
Preferred stock, $0.001 par value per share; 5,000,000 shares authorized at March 31, 2020 and December 31, 2019; no shares issued and outstanding at March 31, 2020 and December 31, 2019	0	0
Common stock, $0.001 par value per share; 200,000,000 shares authorized at March 31, 2020 and December 31, 2019; 109,991,553 and 106,801,409 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	110	107
Additional paid-in capital	270,301	266,717
Accumulated deficit	(251,960)	(293,524)
Total Stockholders’ Equity (Deficit)	18,451	(26,700)
Total Liabilities and Stockholders’ Equity (Deficit)	$ 104,665	$ 114,365