Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares shares in Thousands	Mar. 31, 2022	Dec. 31, 2021
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.001	$ 0.001
Preferred stock, shares authorized	2,500	2,500
Preferred stock, shares issued	10	10
Preferred stock, shares outstanding	10	10
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	50,000	50,000
Common stock, shares issued	17,687	16,940
Common stock, shares outstanding	17,687	16,940