Summary of Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2021

Accounting Policies [Abstract]

Schedule of Cash Cash Equivalents And Restricted Cash

The following table provides a reconciliation of cash and cash equivalents and restricted cash reported within the consolidated balance sheets to the amount reported in the Consolidated Statement of Cash Flows for the years ended December 31, 2021 and 2020 (in thousands).

	Year ended December 31,
	2021		2020
Cash and cash equivalents	$	24,361	$	13,994
Restricted cash		811		461
Cash, cash equivalents and restricted cash in the consolidated statements of cash flows	$	25,172	$	14,455

Schedule of Basic and Diluted Net Loss Per Share

The following tables show the computation of basic and diluted net (loss) income per share for 2021 and 2020 (in thousands, except number of shares):

	Year Ended December 31,
	2021			2020
Common Stock
Numerator:
Net (loss) income available to stockholders,    basic	$	(48,688	)	$	3,366
Effect of dilutive securities:
Redeemable stock options		—			(2,511	)
Net (loss) income available to stockholders,    diluted	$	(48,688	)	$	855
Denominator:
Weighted-average shares outstanding,    basic		13,625,044			3,707,207
Effect of dilutive securities:
Redeemable stock options		—			1,825,098
Weighted-average shares, diluted		13,625,044			5,532,305
Net (loss) income per share:
Attributable to common stock, basic	$	(3.57	)	$	0.91
Attributable to common stock, diluted	$	(3.57	)	$	0.15
Series G Common Stock
Numerator:
Net loss available to stockholder,    basic	$	—		$	(0.39	)
Effect of dilutive securities:
Redeemable preferred stock and warrants	$	—		$	(0.23	)
Net loss available to stockholder,    diluted	$	—		$	(0.62	)
Denominator:
Weighted-average shares outstanding,    basic and diluted		—			1
Basic net loss per share	$	—		$	(0.39	)
Diluted net loss per share	$	—		$	(0.62	)

Schedule of Dilutive Securities Excluded from Computation of Income (Loss) Per Share

The following weighted average outstanding potentially dilutive securities were excluded from the calculation of diluted net income (loss) per share attributable to common stockholders because their impact under the “treasury stock method” and “if-converted method” was anti-dilutive for the periods presented:

	Year Ended December 31,
	2021		2020
Redeemable preferred stock and warrants		—		14,883,489
Stock options issued and outstanding under the 2006 Stock Plan, 2015 Equity Incentive Plan and 2021 Equity Incentive Plan		2,144,860		1,444,611
Restricted stock units		223,716		—
Stock issuable in offering period under the Employee Stock Purchase Plan		8,248		—

Schedule of Revenue from Contracts with Customers

For the years ended December 31, 2021 and 2020, revenue from contracts with customers consisted of the following (in thousands):

	Year ended December 31,
	2021		2020
LDD (including training)	$	13,774	$	10,159
LAL		8,163		4,256
Service warranty, service contracts, and    accessories		656		263
	$	22,593	$	14,678