Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Current assets
Cash and cash equivalents	$ 42,920	$ 51,792
Short-term investments	72,240	48,325
Receivables
Trade, less allowance for credit losses of $4,288 and $4,825 as of December 31, 2021 and 2020, respectively	20,832	16,487
Related parties, less allowance for credit losses of $1,509 as of December 31, 2021 and 2020	73	19
Notes	0	3,689
Other	566	232
Inventory	13,261	11,359
Prepaid expenses and other	6,736	7,192
Current assets held for sale or abandonment	0	9,853
Total current assets	156,628	148,948
Long-term investments	48,562	0
Property, plant and equipment, net	34,315	34,924
Intangible assets, net	54,115	65,396
Goodwill	54,148	54,363
Right-of-use assets	10,900	9,353
Other assets	1,188	1,603
Total assets	359,856	314,587
Current liabilities
Accounts payable	5,405	4,598
Accrued compensation and benefits	11,223	8,097
Other accrued liabilities	11,595	9,549
Deferred revenue	4,442	2,800
Current portion of long-term debt	402	360
Current portion of lease liabilities	1,551	2,657
Related party payables	27	19
Current liabilities held for sale or abandonment	0	14,047
Total current liabilities	34,645	42,127
Long-term debt, net of current portion	182,749	171,522
Deferred revenue, net of current portion, including $21,205 from related parties as of December 31, 2021 and 2020	23,023	23,023
Lease liabilities, net of current portion	9,502	7,744
Deferred tax liabilities	2,539	2,897
Other long-term liabilities	50	100
Total liabilities	252,508	247,413
Commitments and Contingencies
Shareholders' equity
Common stock, no par value, 400,000,000 shares authorized as of December 31, 2021 and 2020; and 206,739,874 shares and 187,663,207 shares issued and outstanding as of December 31, 2021 and 2020, respectively	0	0
Additional paid-in capital	2,022,701	1,886,567
Accumulated deficit	(1,915,556)	(1,823,390)
Accumulated other comprehensive income	203	3,997
Total shareholders' equity	107,348	67,174
Total liabilities and shareholders' equity	$ 359,856	$ 314,587

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.