Condensed Consolidating Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current assets
Cash and cash equivalents	$ 41,813	$ 49,591
Short-term investments	3,637
Prepaid and other current assets	260	323
Total current assets	45,710	49,914
Property and equipment, net	256	200
Other noncurrent assets	64
Total assets	46,030	50,114
Current liabilities
Accounts payable	214	193
Accrued expenses and other current liabilities	545	447
Total current liabilities	759	640
Total liabilities	759	640
Commitments and contingencies (Note 5)
Preferred stock
Preferred stock	0	0
Stockholders' equity
Common stock; $0.00001 par value; 80,000,000 shares authorized at June 30, 2018 (unaudited) and December 31, 2017; 10,353,916 and 10,307,247 shares issued and outstanding at June 30, 2018 (unaudited) and December 31, 2017, respectively	0	0
Additional paid-in capital	58,769	58,544
Accumulated other comprehensive loss	(2)
Accumulated deficit	(13,496)	(9,070)
Total stockholders' equity	45,271	49,474
Total liabilities, preferred stock and stockholders' equity	$ 46,030	$ 50,114