Unaudited Consolidated Balance Sheets (Parenthetical) - $ / shares shares in Thousands	Sep. 30, 2022	Dec. 31, 2021
Unaudited Consolidated Balance Sheets
Preferred stock, par value (in dollars per share)	$ 0.001	$ 0.001
Preferred stock, shares authorized (in shares)	1,000	1,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	70,000	70,000
Common stock, shares issued (in shares)	37,393	37,589
Common stock, shares outstanding (in shares)	37,393	37,589