CONDENSED CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Current assets:
Cash and cash equivalents	$ 26,434	$ 13,678
Accounts receivable	2	1,066
Prepaid expenses and other current assets	283	292
Total current assets	26,719	15,036
Property and equipment, net	191	203
Investment	2,618	2,745
Other long-term assets	322	321
Total assets	29,850	18,305
Current liabilities:
Accounts payable	5,003	1,858
Accounts payable - related parties	23	88
Accrued expenses	1,049	1,832
Accrued income taxes	327	3
Other liabilities, current	20	33
Total current liabilities	6,422	3,814
Other liabilities, non-current	119	119
Total liabilities	6,541	3,933
Commitments and contingencies (Note 2)
Redeemable Preferred Stock
Series A Preferred stock - $0.0001 par value, 39,733 and 83,502 issued and outstanding at March 31, 2017 and December 31, 2016, respectively (Liquidation preference of $6,556 at March 31, 2017 and $13,778 at December 31, 2016, respectively)	6,264	13,486
Stockholders' equity
Preferred stock - $0.0001 par value; 10,000,000 shares authorized; no shares issued and outstanding (which excludes 39,733 shares and 83,502 Series A Redeemable Preferred Stock at March 31, 2017 and December 31, 2016, respectively) at March 31, 2017 and December 31, 2016, respectively	0	0
Common stock - $0.0001 par value; 80,000,000 shares authorized; 23,139,216 and 23,102,728 shares issued and outstanding at March 31, 2017 and December 31, 2016, respectively	2	2
Additional paid-in capital	18,349	18,140
Accumulated deficit	(1,306)	(17,256)
Total stockholders' equity	17,045	886
Total liabilities and stockholders' equity	$ 29,850	$ 18,305