CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Current assets:
Cash and cash equivalents	$ 21,464	$ 25,182
Short-term investments	21,782	24,467
Accounts receivable, net	11,571	12,292
Prepaid expenses and other current assets	603	999
Total current assets	55,420	62,940
Property and equipment, net	590	703
Intangible assets, net	250	250
Right of use assets, net	144	0
Other assets	712	707
Total assets	57,116	64,600
Current liabilities:
Accounts payable	456	368
Accrued compensation	3,100	3,423
Other accrued liabilities	1,050	978
Accrued legal settlement	0	10,000
Short-term lease liability	138	0
Short-term deferred revenue	1,210	1,135
Total current liabilities	5,954	15,904
Long-term deferred revenue	7	0
Other long-term liabilities	808	800
Total liabilities	6,769	16,704
Commitments and contingencies (Note 3)
Stockholders' equity:
Common stock; par value $0.0001, 50,000,000 shares authorized; 19,451,664 issued and 18,968,750 outstanding at June 30, 2019 and 19,438,178 issued and 18,955,264 outstanding December 31, 2018	2	2
Additional paid-in capital	268,963	268,794
Treasury stock, at cost (482,914 shares at June 30, 2019 and December 31, 2018)	(5,297)	(5,297)
Accumulated other comprehensive loss	(2,321)	(2,507)
Accumulated deficit	(211,000)	(213,096)
Total stockholders' equity	50,347	47,896
Total liabilities and stockholders' equity	$ 57,116	$ 64,600