Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
CURRENT ASSETS
Cash and cash equivalents	$ 14,663	$ 4,394
Investments held-to-maturity	0	16,863
Accounts receivable	2,006	165
Prepaid expenses and other current assets	262	364
TOTAL CURRENT ASSETS	16,931	21,786
PROPERTY AND EQUIPMENT
Property and equipment	4,143	3,784
Less: Accumulated depreciation and amortization	(2,433)	(1,797)
PROPERTY AND EQUIPMENT, NET	1,710	1,987
NONCURRENT ASSETS
Intangible assets, net	1,511	1,374
Restricted cash	211	211
Goodwill	808	817
Operating lease right-of-use assets	2,642
Other assets	68	69
TOTAL NONCURRENT ASSETS	5,240	2,471
TOTAL ASSETS	23,881	26,244
CURRENT LIABILITIES
Accounts payable	948	695
Accrued expenses	272	464
Accrued salaries and payroll related expenses	1,751	1,835
Deferred revenue	2,109	271
Operating lease liabilities, current	600
TOTAL CURRENT LIABILITIES	5,680	3,265
LONG-TERM LIABILITIES
Deferred rent		81
Operating lease liabilities, net of current portion	2,217
TOTAL LIABILITIES	7,897	3,346
Commitments and contingencies (Note 11)	0	0
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value, 100,000,000 authorized and 32,489,179 outstanding as of September 30, 2019, and 47,000,000 authorized and 27,391,290 outstanding as of December 31, 2018	32	27
Preferred stock, $0.001 par value, 3,000,000 authorized and none outstanding as of September 30, 2019 and December 31, 2018	0	0
Additional paid-in capital	130,623	115,450
Accumulated other comprehensive loss	(25)	(15)
Accumulated deficit	(114,646)	(92,564)
TOTAL STOCKHOLDERS’ EQUITY	15,984	22,898
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	$ 23,881	$ 26,244