Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Non-redeemable convertible preferred stock, par value	$ 0.001	$ 0.001
Non-redeemable convertible preferred stock, shares authorized	20,000,000	20,000,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	120,000,000	120,000,000
Common stock, shares issued	8,004,389	7,539,089
Common stock, shares outstanding	8,004,389	7,539,089
Series D Redeemable Convertible Preferred Stock [Member]
Temporary equity, par value	$ 0.001	$ 0.001
Temporary equity, shares authorized	50	50
Temporary equity, shares issued	43	43
Temporary equity, shares outstanding	43	43
Temporary equity, liquidation preference	$ 4,300	$ 4,300
Nonredeemable Convertible Preferred Stock [Member]
Non-redeemable convertible preferred stock, par value	$ 0.001	$ 0.001
Non-redeemable convertible preferred stock, shares authorized	10,004,310	10,006,310
Non-redeemable convertible preferred stock, shares issued	5,254,310	5,255,124
Non-redeemable convertible preferred stock, shares outstanding	5,254,310	5,255,124
Liquidation preference	$ 9,766	$ 10,565

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