Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Current assets
Accounts receivable allowance for credit losses	$ 184	$ 184
Shareholders' equity
Common stock, no par value (in usd per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	255,482,753	208,150,021
Common stock, shares outstanding (in shares)	255,482,753	208,150,021