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Stock options | 12 Months Ended
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Oct. 31, 2017
Disclosure of Compensation Related Costs, Share-based Payments [Abstract] |
Stock-based compensation and equity transactions | Note 9 - Stock options Incentive and non-qualified stock option plans On March 9, 2010, the Company’s Board of Directors adopted the RF Industries, Ltd. 2010 Stock Incentive Plan (the “2010 Plan”). In June 2010, the Company’s stockholders approved the 2010 Plan by vote as required by NASDAQ. An aggregate of 1,000,000 shares of common stock was set aside and reserved for issuance under the 2010 Plan. The Company’s stockholders approved the issuance of an additional 500,000 shares of common stock at its annual meeting held on September 5, 2014, another 500,000 shares of common stock at its annual meeting held September 4, 2015 and another 1,000,000 shares of common stock at its annual meeting held September 8, 2017. As of October 31, 2017, 1,726,138 shares of common stock were remaining for future grants of stock options under the 2010 Plan. Additional disclosures related to stock option plans The fair value of each option granted in 2017 and 2016 was estimated on the grant date using the Black-Scholes option pricing model with the following assumptions:
|  | 2017 |  |  | 2016 |
Weighted average volatility |  |  | 43.3 | % |  |  | 28.7 | %
Expected dividends |  |  | 5.0 | % |  |  | 2.4 | %
Expected term (in years) |  |  | 4.3 |  |  |  | 3.0 |
Risk-free interest rate |  |  | 1.20 | % |  |  | 0.70 | %
Weighted average fair value of options granted during the year |  | $ | 0.39 |  |  | $ | 0.66 |
Weighted average fair value of options vested during the year |  | $ | 1.95 |  |  | $ | 4.36 |
Expected volatilities are based on historical volatility of the Company’s stock price and other factors. The Company used the historical method to calculate the expected life of the 2017 option grants. The expected life represents the period of time that options granted are expected to be outstanding. The risk-free rate is based on the U.S. Treasury rate with a maturity date corresponding to the options’ expected life. The dividend yield is based upon the historical dividend yield. Additional information regarding all of the Company's outstanding stock options at October 31, 2017 and 2016 and changes in outstanding stock options in 2017 and 2016 follows:
|  | 2017 |  | 2016 |
|  | Shares or |  | Weighted |  | Shares or |  | Weighted |
|  | Price Per |  | Average |  | Price Per |  | Average |
|  | Share |  | Exercise Price |  | Share |  | Exercise Price |
Options outstanding at beginning of year |  |  | 1,007,851 |  | $ | 4.07 |  |  | 1,240,100 |  | $ | 3.64 |
Options granted |  |  | 449,068 |  | $ | 1.61 |  |  | 104,936 |  | $ | 3.36 |
Options exercised |  |  | (36,763) |  | $ | 1.50 |  |  | (180,067) |  | $ | 0.27 |
Options forfeited |  |  | (260,385) |  | $ | 4.10 |  |  | (157,118) |  | $ | 4.53 |
Options outstanding at end of year |  |  | 1,159,771 |  | $ | 3.19 |  |  | 1,007,851 |  | $ | 4.07 |
Options exercisable at end of year |  |  | 926,272 |  | $ | 3.08 |  |  | 724,457 |  | $ | 3.93 |
Options vested and expected to vest at end of year |  |  | 1,159,002 |  | $ | 3.19 |  |  | 1,002,522 |  | $ | 4.07 |
Option price range at end of year |  | $ | 1.07 - $6.91 |  |  |  |  | $ | 2.30 - $6.91 |  |  |  |
Aggregate intrinsic value of options exercised during year |  | $ | 55,000 |  |  |  |  | $ | 456,000 |  |  |  |
Weighted average remaining contractual life of options outstanding as of October 31, 2017: 4.19 years Weighted average remaining contractual life of options exercisable as of October 31, 2017: 3.18 years Weighted average remaining contractual life of options vested and expected to vest as of October 31, 2017: 4.19 years Aggregate intrinsic value of options outstanding at October 31, 2017: $552,000 Aggregate intrinsic value of options exercisable at October 31, 2017: $503,000 Aggregate intrinsic value of options vested and expected to vest at October 31, 2017: $552,000 As of October 31, 2017, $275,000 of expense with respect to nonvested share-based arrangements has yet to be recognized which is expected to be recognized over a weighted average period of 6.33 years. Effective for the fiscal year ending October 31, 2017, non-employee directors receive $50,000 annually, which is paid one-half in cash and one-half through the grant of non-qualified stock options to purchase shares of the Company’s common stock. Previously, for the fiscal year ended October 31, 2016, non-employee directors received $30,000 annually. During the quarter ended January 31, 2017, the Company granted each of its four non-employee directors 77,339 options. The number of stock options granted to each director was determined by dividing $25,000 by the fair value of a stock option grant using the Black-Scholes model ($0.32 per share). These options vest ratably over fiscal year 2017. On June 9, 2017, the Company’s Board of Directors appointed Gerald Garland to serve as a director. Mr. Garland received a prorated portion of the compensation paid by the Company. The number of stock options granted to Mr. Garland was determined by dividing $9,863 (the portion of his director fee for the year ending October 31, 2017) by the fair value of a stock option grant using the Black-Scholes model ($0.40 per share). These options vest ratably over the remaining portion of fiscal year 2017. On April 6, 2016, Howard Hill, the Company’s former Chief Operating Officer, retired from the Company. On becoming a non-employee member of the Board on April 7, 2016, Mr. Hill was granted 33,744 options, representing the director compensation payable to him for his services for the remainder of the 2016 fiscal year. The number of stock options granted was determined by dividing his pro-rata portion of his stock based compensation for serving on the Board of $8,750 by the fair value of a stock option grant using the Black-Scholes model ($0.26). These options vested ratably over fiscal 2016.

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- Definition The entire disclosure for compensation-related costs for equity-based compensation, which may include disclosure of policies, compensation plan details, allocation of equity compensation, incentive distributions, equity-based arrangements to obtain goods and services, deferred compensation arrangements, employee stock ownership plan details and employee stock purchase plan details. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -URI http://asc.fasb.org/topic&trid=2228938 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 50 -URI http://asc.fasb.org/subtopic&trid=2208855 + Details
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