CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash	$ 12,294	$ 9,383
Accounts receivable, net of allowances of $361 and $299 as of September 30, 2020 and December 31, 2019, respectively	20,389	18,363
Inventories	20,399	16,145
Prepaid expenses and other current assets	3,236	2,292
Total current assets	56,318	46,183
Property and equipment, net	2,392	2,042
Operating lease right-of-use assets	3,463	4,629
Intangible assets, net	8,138	10,104
Goodwill	10,204	10,238
Other assets	1,053	1,122
Total assets	81,568	74,318
Current liabilities:
Accounts payable	9,460	8,799
Current portion - contractual payment obligation	950	1,311
Current portion - financial liabilities, net of debt issuance costs of $235 and $41 as of September 30, 2020 and December 31, 2019, respectively	23,758	14,189
Operating lease liabilities	1,957	1,814
Deferred revenue	2,180	2,193
Accrued compensation and related benefits	2,845	1,671
Other accrued expenses and liabilities	2,757	4,498
Total current liabilities	43,907	34,475
Long-term contractual payment obligation	246	360
Long-term operating lease liabilities	2,673	3,013
Long-term deferred revenue	495	640
Other long-term liabilities	381	364
Total liabilities	47,702	38,852
Commitments and contingencies (see Note 17)
Stockholders´ equity:
Common stock, $0.001 par value: 50,000 shares authorized; 19,320 and 18,209 shares issued and 17,966 and 16,986 shares outstanding as of September 30, 2020 and December 31, 2019, respectively	19	18
Additional paid-in capital	451,271	447,965
Treasury stock, 1,354 and 1,223 shares as of September 30, 2020 and December 31, 2019, respectively	(9,647)	(9,043)
Accumulated deficit	(409,911)	(405,504)
Accumulated other comprehensive income	2,129	2,025
Total stockholders´ equity	33,866	35,466
Total liabilities and stockholders' equity	81,568	74,318
Series B convertible preferred stock
Stockholders´ equity:
Series B convertible preferred stock, $0.001 par value: 5,000 shares authorized; 5,000 shares issued and outstanding as of September 30, 2020 and December 31, 2019	$ 5	$ 5