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Stock Based Compensation (Tables)
 12 Months Ended
Dec. 31, 2022
Share-Based Payment Arrangement [Abstract]  
Schedule of Share-based Payment Award, Stock Options, Valuation Assumptions The fair value of each stock option granted was estimated using the following assumptions:
June 28, 2021
Risk free interest rate0.47%
Expected option lives3 years
Expected volatility1.36
Estimated forfeiture rate—
Expected dividend yields—
Weighted average grant date fair value of options$37.20
Summary of Options Granted, Exercised, Expired and Forfeited
A summary of stock options expired and forfeited under our plans and options outstanding as of, and changes made during, the years ended December 31, 2022 and 2021 is presented below:
Outstanding
Exercisable
Number of Options
Weighted Average Exercise Price
Number of Options
Weighted Average Exercise Price
Options outstanding and exercisable, December 31, 20207,169 $294.63 7,169 $294.63 
Granted20,000 48.75 
Options outstanding and exercisable, December 31, 202127,169 113.63 7,169 294.63 
Vested— — 3,332 48.75 
Expired(501)410.18 (501)410.18 
Forfeited(10,000)48.75 — — 
Options outstanding and exercisable, December 31, 202216,668 $143.63 10,000 $206.85 
Shares Outstanding and Exercisable, By Exercise Price Range Additional information as of December 31, 2022 is as follows:
 Outstanding ExercisableExercisable
Range of priceNumber
of Options		Weighted
Average
Remaining
Contractual
Life (In Years)		Weighted
Average
Exercise
Price		Number
of Options		Weighted
Average
Exercise
Price
$0.00 – $100.00
10,000 8.50$48.75 3,332 $48.75 
$100.01 – $200.00
167 0.50135.00 167 135.00 
$201.01 – $300.00
6,501 0.17289.77 6,501 289.77 
16,668 3.06$143.63 10,000 $206.85 
Schedule of Compensation Expense
Stock-based compensation expense relating to Restricted Series D Preferred Stock is allocated as follows (in thousands):
Year Ended December 31,
20222021
Research and development
$— $17 
Sales, general and administrative— 16 
$— $33