Redeemable Preferred Stock and Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2022

Equity [Abstract]

Summary of Income Statement Classification of Compensation Expense

The following table summarizes the income statement classification of compensation expense associated with share-based payments (in thousands):

	Three Months Ended
	March 31,
	2022		2021
Cost of revenue	$	20	$	79
Sales and marketing		99		121
General and administrative		48		615
Engineering and development		42		113
Total	$	209	$	928

Assumptions on Estimation of Stock Option Fair Values

The fair values of stock options granted in the period were estimated using the Black-Scholes option-pricing model with the following assumptions:

	Three Months Ended
	March 31,
	2022			2021
Expected term (years)		—			6.1
Volatility		—	%		110	%
Annual dividend per share	N/A			N/A
Risk-free interest rate		—	%		0.69	%

Summary of Option Activity

A summary of option activity for the three months ended March 31, 2022 is as follows (in thousands, except per share data):

				Weighted		Weighted Average Remaining
				Average		Contractual		Aggregate
	Shares			Exercise Price		Term (Years)		Intrinsic Value(1)
Options outstanding at December 31, 2021		70		$	62.00		7.1	$	15
Forfeited, cancelled, or expired		(2	)	$	78.00
Options outstanding at March 31, 2022		68		$	61.75		6.8	$	1
Options exercisable at March 31, 2022		65		$	63.75		6.7	$	—
Vested options expired during the period    ended March 31, 2022		—		$	—

(1)The intrinsic value calculation does not include negative values, which can occur when the fair market value on the reporting date is less than the exercise price of the award.

Summary of Unvested Stock Option Activity

A summary of unvested stock option activity for the three months ended March 31, 2022 is as follows (in thousands, except per share data):

				Weighted
				Average Grant
	Shares			Date Fair Value
Unvested options at December 31, 2021		5		$	17.50
Granted		—		$	—
Vested		(1	)	$	24.50
Forfeited or cancelled		(1	)	$	12.75
Unvested options at March 31, 2022		3		$	17.25

Fair Value Disclosures Related to Grants, Exercises and Vesting Options

Fair value disclosures related to grants, exercises and vested options are as follows (in thousands, except per share amounts):

	Three Months Ended
	March 31,
	2022		2021
Proceeds from stock options exercised	$	—	$	—
Tax benefit related to stock options exercised (1)	N/A		N/A
Intrinsic value of stock options exercised (2)	$	—	$	—
Weighted-average fair value of options granted per share	$	—	$	26.75
Total fair value of stock options vested during the period	$	14	$	21

(1)Excess tax benefits received related to stock option exercises are presented as operating cash inflows. The Company currently does not receive a tax benefit related to the exercise of stock options due to the Company’s net operating losses.

(2)The intrinsic value of stock options exercised is the amount by which the market price of the stock on the date of exercise exceeded the exercise price of the options.

Summary of Unvested Restricted Stock Units

A summary of unvested RSU activity for the three months ended March 31, 2022 is as follows (in thousands, except per share amounts):

				Weighted
				Average Grant
	Shares			Date Fair Value
Unvested RSUs at December 31, 2021		94		$	15.75
Granted		17		$	9.75
Vested		(2	)	$	24.25
Forfeited or cancelled		(1	)	$	15.25
Unvested RSUs at March 31, 2022		108		$	14.50

Summary of Warrant Activity

A summary of warrant activity for the three months ended March 31, 2022 is as follows (in thousands, except exercise price amounts):

			Weighted
			Average
	Shares		Exercise Price
Warrants outstanding, December 31, 2021		714	$	20.00
Granted or Issued		—	$	—
Exercised		—	$	—
Forfeited, cancelled, or expired		—	$	—
Warrants outstanding at March 31, 2022		714	$	20.00
Warrants exercisable at March 31, 2022		714	$	20.00
Vested warrants expired during the period    ended March 31, 2022		—	$	—