CONDENSED CONSOLIDATED BALANCE SHEET - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents	$ 27,029	$ 61,014
Investments	50,463	47,437
Trade accounts receivable	2,610	3,222
Inventory	9,459	8,059
Prepaid expenses	961	955
Other current assets	1,517	1,165
Total current assets	92,039	121,852
Property and equipment, net	7,104	7,905
Right of use assets	3,402	3,917
Other non-current assets	1,674	750
Total assets	104,219	134,424
Current liabilities:
Accounts payable	2,372	2,351
Accrued liabilities	3,176	3,828
Accrued interest	191	1,262
Deferred revenue	338	271
Current portion of long-term debt	511	0
Current operating lease liability	482	450
Total current liabilities	7,070	8,162
Non-current operating lease liability	3,231	3,579
Other non-current liabilities	259	19
Long-term debt	5,028	0
Convertible notes	138,299	130,043
Total liabilities	153,887	141,803
Commitments and contingencies
Stockholders’ deficit:
Preferred shares	0	0
Common stock	57	55
Contributed capital	469,302	452,344
Treasury stock	(45,067)	(45,067)
Accumulated deficit	(474,054)	(414,653)
Accumulated other comprehensive income (loss)	94	(58)
Total stockholders’ deficit	(49,668)	(7,379)
Total liabilities and stockholders’ deficit	$ 104,219	$ 134,424