Summary of Significant Accounting Policies | 1. Summary of Significant Accounting Policies. Description of Business. Insignia Systems, Inc. (the “Company”) markets in-store advertising products, programs and services primarily to consumer packaged goods manufacturers. The Company’s products include the Insignia Point-of-Purchase Services (POPS) in-store marketing program, thermal sign card supplies for the Company’s Impulse Retail System, and laser printable cardstock and label supplies. In October 2014, the Company announced the introduction of a new product, The Like Machine TM (“TLM”). The Company previously licensed this product from TLM Holdings, LLC (“TLMH”), a company in which Insignia’s former Chief Sales and Marketing Officer, Tim Halfmann, is the majority owner and serves as a principal. In March 2016, the Company and TLMH signed a new distribution agreement for the sale of The Like Machine to Insignia’s customers. This distribution agreement replaced the Company’s prior license agreement with TLMH. Mr. Halfmann resigned from Insignia, effective April 30, 2016 in order to focus his efforts more fully on The Like Machine product and its evolution going forward. Basis of Presentation . Financial statements for the interim periods included herein are unaudited; however, they contain all adjustments, including normal recurring accruals, which in the opinion of management, are necessary to present fairly the financial position of the Company at June 30, 2016, and its results of operations for the three and six months ended June 30, 2016 and 2015, and its cash flows for the six months ended June 30, 2016 and 2015. Results of operations for the periods presented are not necessarily indicative of the results to be expected for the full year. The financial statements do not include certain footnote disclosures and financial information normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America and, therefore, should be read in conjunction with the financial statements and notes included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2015. The Summary of Significant Accounting Policies in the Company’s 2015 Annual Report on Form 10-K describes the Company’s accounting policies. Inventories . Inventories are primarily comprised of parts and supplies for Impulse machine, sign cards, rollstock and TLM devices. Inventory is valued at the lower of cost or market using the first-in, first-out (FIFO) method, and consisted of the following as of the dates indicated: June 30, December 31, 2016 2015 Raw materials $ $ Work-in-process Finished goods $ $ Property and Equipment . Property and equipment consisted of the following as of the dates indicated: June 30, December 31, 2016 2015 Property and Equipment: Production tooling, machinery and equipment $ $ Office furniture and fixtures Computer equipment and software Web site Leasehold improvements — Construction in-progress Accumulated depreciation and amortization ) ) Net Property and Equipment $ $ Depreciation expense was approximately $196,000 and $390,000 in the three and six months ended June 30, 2016, respectively, and $159,000 and $322,000 in the three and six months ended June 30, 2015, respectively. Stock-Based Compensation . The Company measures and recognizes compensation expense for all stock-based awards at fair value using the Black-Scholes option pricing model to determine the weighted average fair value of options and employee stock purchase plan rights. The Company recognizes stock-based compensation expense on a graded-attribution method over the requisite service period of the award. The Company issued options to purchase an aggregate of 20,000 shares of common stock under its 2013 Omnibus Stock and Incentive Plan, as amended (the “2013 Plan”), with a weighted average exercise price of $2.90, during the six months ended June 30, 2016. The Company estimated the fair value of these awards using the following weighted average assumptions: expected life of 2.5 years, expected volatility of 41%, dividend yield of 0% and risk-free interest rate of 1.00%. The Company issued options to purchase an aggregate of 200,000 shares of common stock under the 2013 Plan, as amended, with a weighted average exercise price of $2.82, during the six months ended June 30, 2015. The Company estimated the fair value of these awards using the following weighted average assumptions: expected life of 3.4 years, expected volatility of 45%, dividend yield of 0% and risk-free interest rate of 1.18%. During the six months ended June 30, 2016, the Company issued 100,000 shares of restricted stock under the 2013 Plan. The shares underlying the awards were assigned a value of $2.33 per share, based on the stock price on the date of the grant, and are scheduled to vest over five years. The Company issued 31,000 restricted stock units under the 2013 Plan during the six months ended June 30, 2015. Each unit represents the right to acquire one share of the Company’s common stock. The units were assigned a value of $2.82 per share, based on the stock price on the date of grant, and are scheduled to vest over three years. The Company estimated the fair value of stock-based awards granted during the six months ended June 30, 2016, under the Company’s employee stock purchase plan using the following weighted average assumptions: expected life of 1.0 years, expected volatility of 31%, dividend yield of 0% and risk-free interest rate of 0.61%. During May and June 2016, members of the Board of Directors received grants totaling 54,036 fully vested shares of common stock pursuant to the 2013 Plan. The shares were assigned a weighted average value of $2.19 per share, based on the stock prices on the applicable grant dates, for a total value of $119,000, of which $109,000 is included in stock-based compensation expense for the six months ended June 30, 2016 and $10,000 was accrued for and expensed in the prior year. In June 2015, members of the Board of Directors received similar grants totaling 37,233 shares pursuant to the 2013 Plan. The shares were assigned a value of $2.82 per share, based on the stock price on the date of grant, for a total value of $105,000, which is included in stock-based compensation expense for the six months ended June 30, 2015. Total stock-based compensation expense recorded for the three and six months ended June 30, 2016 was $82,000 and $108,000, respectively, and for the three and six months ended June 30, 2015 was $195,000 and $278,000, respectively. During each of the three and six months ended June 30, 2016, there were approximately 61,000 shares issued pursuant to stock option exercises, for which the Company received proceeds of $16,000. During the three and six months ended June 30, 2015 there were approximately 10,000 shares and 34,000 shares issued pursuant to stock option exercises, for which the Company received proceeds of $1,000 and $2,000, respectively. A portion of the stock option exercises in the three and six months ended June 30, 2016 and 2015 were completed on a cashless basis. Net Income (Loss) per Share . Basic net income (loss) per share is computed by dividing net income (loss) by the weighted average shares outstanding and excludes any potential dilutive effects of stock options and restricted stock units and awards. Diluted net income (loss) per share gives effect to all diluted potential common shares outstanding during the period. Due to the net loss incurred during the three and six months ended June 30, 2016, all stock awards were anti-dilutive for the period. Options to purchase approximately 628,000 and 650,000 shares of common stock with a weighted average exercise price of $3.79 and $3.89, respectively, were outstanding at June 30, 2015 and were not included in the computation of common stock equivalents for the three and six months ended June 30, 2015 because their exercise prices were higher than the average fair market value of the common shares during the reporting period. Weighted average common shares outstanding for the three and six months ended June 30, 2016 and 2015 were as follows: Three Months Ended Six Months Ended June 30 June 30 2016 2015 2016 2015 Denominator for basic net income (loss) per share - weighted average shares Effect of dilutive securities: Stock options and restricted stock units and awards — — Denominator for diluted net income (loss) per share - weighted average shares |