Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 16,062	$ 7,257
Short-term marketable securities	735	6,975
Accounts receivable, net	5,417	10,915
Inventories	3,895	5,401
Prepaid expenses and other current assets	1,685	1,689
Total current assets	27,794	32,237
Property and equipment, net	5,631	4,608
Operating lease right-of-use assets	6,943	5,434
Other assets, net	1,187	1,267
Acquired intangible assets, net	1,581	2,704
Goodwill	18,407	18,407
Total assets	61,543	64,657
Current liabilities:
Accounts payable	687	818
Accrued liabilities and current portion of long-term liabilities	9,649	8,692
Short-term line of credit	3,954	0
Current portion of income taxes payable	5	164
Total current liabilities	14,295	9,674
Long-term liabilities, net of current portion	1,982	982
Operating lease liabilities, net of current portion	5,304	4,212
Income taxes payable, net of current portion	2,368	2,260
Total liabilities	23,949	17,128
Commitments and contingencies (Note 12)
Shareholders’ equity:
Preferred stock	0	0
Common stock	446,278	436,122
Accumulated other comprehensive income	11	12
Accumulated deficit	(408,695)	(388,605)
Total shareholders’ equity	37,594	47,529
Total liabilities and shareholders’ equity	$ 61,543	$ 64,657

Sum of the carrying values as of the balance sheet date of obligations incurred through that date and due after one year (or beyond the operating cycle if longer), including liabilities for compensation costs, fringe benefits other than pension and postretirement obligations, rent, contractual rights and obligations, and statutory obligations.

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- Definition

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).