CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash	$ 13,115	$ 9,383
Accounts receivable, net of allowances of $465 and $299 as of June 30, 2020 and December 31, 2019, respectively	17,976	18,363
Inventories	18,747	16,145
Prepaid expenses and other current assets	2,957	2,292
Total current assets	52,795	46,183
Property and equipment, net	2,269	2,042
Operating lease right-of-use assets	3,492	4,629
Intangible assets, net	8,751	10,104
Goodwill	10,180	10,238
Other assets	1,011	1,122
Total assets	78,498	74,318
Current liabilities:
Accounts payable	9,216	8,799
Current portion - contractual payment obligation	862	1,311
Current portion - financial liabilities, net of debt issuance costs of $410 and $41 as of June 30, 2020 and December 31, 2019, respectively	22,983	14,189
Operating lease liabilities	1,832	1,814
Deferred revenue	2,280	2,193
Accrued compensation and related benefits	2,144	1,671
Other accrued expenses and liabilities	2,296	4,498
Total current liabilities	41,613	34,475
Long-term contractual payment obligation	486	360
Long-term operating lease liabilities	2,989	3,013
Long-term deferred revenue	512	640
Other long-term liabilities	385	364
Total liabilities	45,985	38,852
Commitments and contingencies (see Note 17)
Stockholders´ equity:
Common stock, $0.001 par value: 50,000 shares authorized; 19,177 and 18,209 shares issued and 17,860 and 16,986 shares outstanding as of June 30, 2020 and December 31, 2019, respectively	19	18
Additional paid-in capital	450,480	447,965
Treasury stock, 1,317 and 1,223 shares as of June 30, 2020 and December 31, 2019, respectively	(9,451)	(9,043)
Accumulated deficit	(410,300)	(405,504)
Accumulated other comprehensive income	1,760	2,025
Total stockholders´ equity	32,513	35,466
Total liabilities and stockholders' equity	78,498	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 June 30, 2020 and December 31, 2019	$ 5	$ 5