Condensed Consolidated Balance Sheets (Current Period Unaudited) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Current assets:
Cash and cash equivalents	$ 18,386	$ 28,677
Short-term investments	48,961	51,732
Accounts receivable, net	73,708	60,137
Inventory	42,864	42,110
Prepaid expenses and other current assets	7,249	6,118
Total current assets	191,168	188,774
Property and equipment, net	15,900	20,166
Right-of-use lease assets	4,138	5,438
Other assets	6,930	8,128
Total assets	218,136	222,506
Current liabilities:
Accounts payable	10,226	3,240
Accrued clinical and manufacturing liabilities	17,554	22,291
Accrued payroll and employee liabilities	7,085	9,224
Other accrued liabilities	42,258	41,855
Current lease liabilities	3,194	3,075
Total current liabilities	80,317	79,685
Non-current lease liabilities	1,289	2,800
Non-current notes payable, net	24,634	24,263
Non-current convertible notes payable, net	149,595	149,490
Other non-current liabilities	241	241
Total liabilities	256,076	256,479
Stockholders' deficit:
Common stock	1,516	1,503
Additional paid-in capital	1,878,961	1,870,525
Accumulated other comprehensive (loss) income	(8)	13
Accumulated deficit	(1,918,409)	(1,906,014)
Total stockholders' deficit	(37,940)	(33,973)
Total liabilities and stockholders' deficit	$ 218,136	$ 222,506