CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	[1]
Current assets:
Cash and cash equivalents	$ 8,583	$ 11,134
Restricted cash	972	971
Accounts receivable, net	7,081	8,939
Prepaid expenses and other current assets	3,085	3,522
Total current assets	19,721	24,566
Property and equipment, net	7,306	8,524
Right-of-use assets, operating leases	12,685	7,705
Intangible assets, net	0	95
Other non-current assets	967	1,403
Total assets	40,679	42,293
Current liabilities:
Accounts payable	1,293	1,679
Accrued expenses and other current liabilities	6,677	9,010
Operating lease liabilities	6,970	3,786
Total current liabilities	14,940	14,475
Operating lease liabilities, non-current	6,865	5,181
Other long-term liabilities	1,276	1,577
Total liabilities	23,081	21,233
Commitments and contingencies (Note 12)
Stockholders’ equity:
Common stock, $0.001 par value - 142,857 shares authorized, 6,830 and 6,810 shares issued and outstanding at March 31, 2020 and December 31, 2019, respectively	7	7
Additional paid-in capital	299,689	299,263
Accumulated deficit	(281,083)	(277,112)
Accumulated other comprehensive loss	(1,015)	(1,098)
Total stockholders’ equity	17,598	21,060
Total liabilities and stockholders’ equity	$ 40,679	$ 42,293

[1] Derived from the Company’s audited consolidated financial statements as of December 31, 2019.