Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Current assets:
Cash and cash equivalents	$ 23,624	$ 31,257
Short-term marketable securities	0	250
Accounts receivable, net	6,351	4,672
Inventories	1,577	2,445
Prepaid expenses and other current assets	1,888	1,010
Total current assets	33,440	39,634
Property and equipment, net	3,900	5,103
Operating lease right-of-use assets	6,013	6,606
Other assets, net	992	1,081
Acquired intangible assets, net	631	1,207
Goodwill	18,407	18,407
Total assets	63,383	72,038
Current liabilities:
Accounts payable	2,664	995
Accrued liabilities and current portion of long-term liabilities	8,745	9,452
Current portion of income taxes payable	140	147
Total current liabilities	11,549	10,594
Long-term liabilities, net of current portion	569	1,007
Operating lease liabilities, net of current portion	4,178	5,088
Income taxes payable, net of current portion	2,673	2,479
Total liabilities	18,969	19,168
Commitments and contingencies (Note 12)
Shareholders’ equity:
Preferred stock	0	0
Common stock	471,958	467,957
Accumulated other comprehensive income	47	47
Accumulated deficit	(427,591)	(415,134)
Total shareholders’ equity	44,414	52,870
Total liabilities and shareholders’ equity	$ 63,383	$ 72,038