Basis of Presentation - Additional Information (Detail) - USD ($) $ in Thousands				9 Months Ended	12 Months Ended
	Feb. 28, 2021	Feb. 10, 2021	Oct. 29, 2019	Sep. 30, 2021	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Basis Of Presentation [Line Items]
Loss from operations					$ 16,431	$ 18,536	$ 15,621
Working capital					35,500
Cash and cash equivalents, including restricted cash					30,175	17,876	6,101	$ 8,356
Cash and cash equivalents					29,972	17,564
Net accounts receivable					4,238	3,059
Proceeds from issuance of common stock	$ 13,300				13,300
Proceeds from the exercise of common stock warrants					16,562	46
Amount Received for Employee Retention Credit					1,800
Prepaid expenses and other current assets					2,012	$ 3,018
Equity raise of gross proceeds		$ 14,400	$ 4,200
Refundable payroll tax credit						50.00%
Increased credit				70.00%
Cyber Incident
Basis Of Presentation [Line Items]
Prepaid expenses and other current assets					$ 400