Stockholders' Equity (Deficit) - Narrative (Details) $ / shares in Units, $ in Thousands											1 Months Ended			2 Months Ended	3 Months Ended	12 Months Ended
	Jun. 02, 2022 USD ($) $ / shares shares	Jan. 10, 2022 $ / shares shares	Jan. 05, 2022 shares	Dec. 07, 2021 USD ($) $ / shares shares	Nov. 09, 2021 USD ($) $ / shares shares	Oct. 04, 2021 $ / shares shares	Aug. 13, 2021 USD ($) $ / shares shares	Mar. 31, 2021 USD ($) $ / shares shares	Dec. 23, 2020 USD ($) $ / shares shares	Feb. 12, 2020 $ / shares shares	Oct. 31, 2021 USD ($) shares	Apr. 30, 2021 USD ($) shares	Feb. 27, 2020 USD ($) $ / shares shares	Feb. 28, 2022 shares	Mar. 31, 2021 USD ($) $ / shares shares	Mar. 31, 2022 USD ($) vote $ / shares shares	Dec. 31, 2020 USD ($) shares	Feb. 10, 2022 $ / shares shares	Nov. 05, 2021 $ / shares shares	Feb. 11, 2020 shares	Dec. 31, 2019 shares	Oct. 31, 2017 USD ($)
Class of Stock [Line Items]
Common stock, shares issued (in shares)								40,531,996		4,171,571					40,531,996	53,379,307				50,325,662
Common stock, shares outstanding (in shares)								40,531,996		4,171,571					40,531,996	53,379,307				50,325,662
Shares issued in connection with the Reverse Merger (in shares)										1,650,000
Common stock, shares authorized (in shares)								750,000,000							750,000,000	750,000,000
Common stock, par value (in usd per share) | $ / shares								$ 0.0001							$ 0.0001	$ 0.0001
Number of shares sold in private placement offering (in shares)												97,099
Aggregate gross proceeds from closing of offering | $												$ 500
Term of advertising contract												1 year
Shares withheld to satisfy employee withholding tax obligations (in shares)														97,249
Preferred stock, shares outstanding (in shares)																0
Preferred stock, shares issued (in shares)																0
Placement agent fees and closing expenses | $															$ 50	$ 1,127	$ 3,133
Number of votes, common stock (per share) | vote																1
Exercise price (in usd per share) | $ / shares		$ 3.30
Issuance of common stock for exercise of warrants (in shares)		82,500	13,028
Private Placement
Class of Stock [Line Items]
Number of shares sold in private placement offering (in shares)				1,673,152	6,600,000		1,000,000	250,000	5,000,000				5,380,000
Aggregate gross proceeds from closing of offering | $				$ 12,900	$ 33,000		$ 5,000	$ 1,000	$ 15,000				$ 21,500
Price per share (in dollars per share) | $ / shares				$ 7.71	$ 5.00		$ 5.00	$ 4.00	$ 3.00				$ 4.00		$ 4.00
Placement agent fees and closing expenses | $				$ 286	$ 840		$ 22	$ 50	$ 1,400				$ 1,800
Number of common stock issuable from warrants (in shares)							209,000		150,000
Exercise price (in usd per share) | $ / shares							$ 6.00		$ 3.30
Private Placement, Additional Shares Purchased | Subsequent Event
Class of Stock [Line Items]
Number of shares sold in private placement offering (in shares)	3,199,999
Aggregate gross proceeds from closing of offering | $	$ 16,000
Price per share (in dollars per share) | $ / shares	$ 5.00
Placement agent fees and closing expenses | $	$ 280
Number of common stock issuable from warrants (in shares)	666,668
Yaskawa
Class of Stock [Line Items]
Number of shares issued (in shares)						3,120,000
Exercise price (in usd per share) | $ / shares						$ 6.00
Yaskawa Note
Class of Stock [Line Items]
Unsecured subordinated convertible promissory note | $								$ 15,523			$ 15,600				$ 15,523	$ 0						$ 15,000
Yaskawa Note | Yaskawa
Class of Stock [Line Items]
Number of shares issued (in shares)											3,120,000
Warrant | Private Placement
Class of Stock [Line Items]
Placement agent fees and closing expenses | $									$ 223
Number of common stock issuable from warrants (in shares)				348,649	416,667	650,000	209,000		150,000									20,233	958,334
Common Stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)								40,531,996							40,531,996	53,379,307	40,278,496				4,220,998
Shares redeemed (in shares)																	52,773
Shares issued in connection with the Reverse Merger (in shares)																	1,650,000
Shares withheld to satisfy employee withholding tax obligations (in shares)																97,249
Price per share (in dollars per share) | $ / shares										$ 4.00
Issuance of common stock for exercise of warrants (in shares)																95,528
Common Stock | Private Placement
Class of Stock [Line Items]
Exercise price (in usd per share) | $ / shares				$ 9.25	$ 6.00	$ 6.00	$ 6.00		$ 3.30									$ 8.48	$ 6.00
Series 1 Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares outstanding (in shares)										51,680,254										51,680,254
Convertible preferred stock, shares issued (in shares)										51,680,254										51,680,254
Common stock, shares issued (in shares)										12,433,953
Common stock, shares outstanding (in shares)										12,433,953
Series 2 Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares outstanding (in shares)										38,760,190										38,760,190
Convertible preferred stock, shares issued (in shares)										38,760,190										38,760,190
Common stock, shares issued (in shares)										7,499,996
Common stock, shares outstanding (in shares)										7,499,996
Series 3 Preferred Stock
Class of Stock [Line Items]
Convertible preferred stock, shares outstanding (in shares)										31,850,304										31,850,304
Convertible preferred stock, shares issued (in shares)										31,850,304										31,850,304
Common stock, shares issued (in shares)										4,000,000
Common stock, shares outstanding (in shares)										4,000,000
Common Stock
Class of Stock [Line Items]
Shares redeemed (in shares)										52,733
Preferred Stock
Class of Stock [Line Items]
Preferred stock, shares authorized (in shares)																5,000,000