Summary of Significant Accounting Policies | Description of Business . Sale of our Custom Print Business. Basis of Presentation . Inventories . September 30, December 31, 2020 2019 Raw materials $ 32,000 $ 47,000 Work-in-process 8,000 16,000 Finished goods 100,000 259,000 $ 140,000 $ 322,000 Property and Equipment . September 30, December 31, 2020 2019 Property and Equipment: Production tooling, machinery and equipment $ 3,392,000 $ 3,685,000 Office furniture and fixtures 425,000 393,000 Computer equipment and software 1,469,000 1,426,000 5,286,000 5,504,000 Accumulated depreciation and amortization (4,917,000 ) (4,955,000 ) Net Property and Equipment $ 369,000 $ 549,000 Depreciation expense was approximately $85,000 and $255,000 in the three and nine months ended September 30, 2020, respectively, and was $300,000 and $740,000 in the three and nine months ended September 30, 2019, respectively. Stock-Based Compensation During the nine months ended September 30, 2020 and 2019, no equity awards were issued by the Company. In June 2019, non-employee members of the Board of Directors received restricted stock grants totaling 70,755 shares pursuant to the 2018 Equity Incentive Plan (the “2018 Plan”). The shares underlying the awards were assigned a value of $1.06 per share, which was the closing price of the Company’s common stock on the date of grant, for a total grant date value of $75,000. The awards granted to directors in 2019 vested in full on the day immediately preceding the date of the 2020 annual shareholder meeting, July 29, 2020. In July 2020, the Company issued 11,053 shares of common stock in settlement of $9,000 of total deferred fees as a result of a non-employee director’s departure from the Board. In June 2019, the Company issued 8,370 shares of common stock in settlement of $9,000 of total deferred fees as a result of a non-employee director’s departure from the Board. The Company’s non-employee directors are eligible to participate in a director deferred compensation plan, which allows a director to make voluntary deferrals of up to 100% of their annual cash retainers relating to Board and committee service. The Company estimated the fair value of stock-based awards granted during the nine months ended September 30, 2020 under the Company’s employee stock purchase plan using the following weighted average assumptions: expected life of 1.0 year, expected volatility of 58.5%, dividend yield of 0% and risk-free interest rate of 1.56%. Total stock-based compensation expense recorded for the three and nine months ended September 30, 2020 was $37,000 and $145,000, respectively, and for the three and nine months ended September 30, 2019 was $101,000 and $378,000, respectively. Net Loss per Share . Due to the net loss incurred during the three and nine months ended September 30, 2020 and 2019 all outstanding stock options were anti-dilutive for that period. Weighted average common shares outstanding for the three and nine months ended September 30, 2020 and 2019 were as follows: Three Months Ended Nine Months Ended September 30 September 30 2020 2019 2020 2019 Denominator for basic net loss per share - weighted average shares 12,179,000 11,986,000 12,108,000 11,911,000 Effect of dilutive securities: Stock options and restricted stock units — — — — Denominator for diluted net loss per share - weighted average shares 12,179,000 11,986,000 12,108,000 11,911,000 |