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Shareholders' Equity (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
Stock-based compensation expense | $ 232,000 | $ 172,000
Cost of Sales |  |
Stock-based compensation expense | 24,000 | 5,000
Marketing Expenses |  |
Stock-based compensation expense | 12,000 | 1,000
Selling Expenses |  |
Stock-based compensation expense | 25,000 | 38,000
General and Administrative Expense |  |
Stock-based compensation expense | $ 171,000 | $ 130,000

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