Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
CURRENT ASSETS
Cash and cash equivalents	$ 23,873	$ 10,688
Accounts receivable	206	78
Prepaid expenses and other current assets	447	375
TOTAL CURRENT ASSETS	24,526	11,141
PROPERTY AND EQUIPMENT
Property and equipment	4,585	4,519
Less: Accumulated depreciation and amortization	(3,094)	(2,634)
PROPERTY AND EQUIPMENT, NET	1,491	1,885
OTHER NONCURRENT ASSETS
Restricted cash	150	150
Goodwill	846	831
Operating lease right-of-use assets	2,200	2,496
Other assets	68	68
TOTAL OTHER NONCURRENT ASSETS	5,058	5,121
TOTAL ASSETS	31,075	18,147
CURRENT LIABILITIES
Accounts payable	1,045	1,100
Accrued expenses	199	521
Accrued salaries and payroll related expenses	2,456	2,368
Deferred revenue	1,076	1,731
Operating lease liabilities, current	638	612
TOTAL CURRENT LIABILITIES	5,414	6,332
LONG-TERM LIABILITIES
Operating lease liabilities, net of current portion	1,734	2,059
TOTAL LIABILITIES	7,148	8,391
Commitments and contingencies (Note 11)	0	0
STOCKHOLDERS’ EQUITY
Common stock, $0.001 par value, 100,000,000 authorized and 53,112,681 outstanding as of June 30, 2020, and 33,156,246 outstanding as of December 31, 2019	53	33
Preferred stock, $0.001 par value, 3,000,000 authorized and none outstanding as of June 30, 2020 and December 31, 2019	0	0
Additional paid-in capital	161,568	132,214
Accumulated other comprehensive income	18	1
Accumulated deficit	(137,712)	(122,492)
TOTAL STOCKHOLDERS’ EQUITY	23,927	9,756
TOTAL LIABILITIES AND STOCKHOLDERS’ EQUITY	31,075	18,147
Domain name and other intangibles, net
OTHER NONCURRENT ASSETS
Finite-lived intangible assets, net	24	33
Patents, net
OTHER NONCURRENT ASSETS
Finite-lived intangible assets, net	$ 1,770	$ 1,543