Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 96,359	$ 109,155
Accounts receivable (less reserve for doubtful accounts of $277 and $162 as of March 31, 2020 and December 31, 2019, respectively; including $91 and $186 from related parties as of March 31, 2020 and December 31, 2019, respectively)	12,065	10,906
Inventory	11,392	10,463
Prepaid expenses and other current assets	2,722	2,137
Total current assets	122,538	132,661
Restricted cash	1,000	1,026
Property and equipment, net	11,992	12,047
Intangible assets, net	13,115	14,307
Goodwill	8,914	9,353
Right-of-use assets	12,221
Other non-current assets	525	557
Total assets	170,305	169,951
Current liabilities:
Accounts payable (including $29 and $36 to related parties as of March 31, 2020 and December 31, 2019, respectively)	4,723	5,777
Accrued compensation and benefits	4,292	6,570
Other accrued expenses (including $232 and $0 to related parties as of March 31, 2020 and December 31, 2019, respectively)	3,068	2,498
Deferred revenue (including $36 and $55 with related parties as of March 31, 2020 and December 31, 2019, respectively)	5,438	4,697
Current portion of long term debt		75
Short term lease liabilities	305
Other current liabilities	184	216
Total current liabilities	18,010	19,833
Deferred revenue, net of current portion	396	466
Long term debt, net of current portion	7,608	7,587
Long term lease liabilities	22,741
Other non-current liabilities	2,504	13,407
Total liabilities	51,259	41,293
Commitments and contingencies (Note 11)
Stockholders’ equity:
Common stock, $0.001 par value: Authorized-120,000,000 shares as of March 31, 2020 and December 31, 2019; issued and outstanding — 28,243,442 and 28,112,201 shares as of March 31, 2020 and December 31, 2019, respectively	28	28
Additional paid-in capital	348,072	345,027
Accumulated other comprehensive loss	(1,200)	(153)
Accumulated deficit	(227,854)	(216,244)
Total stockholders’ equity	119,046	128,658
Total liabilities and stockholders’ equity	$ 170,305	$ 169,951