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Stockholders' Equity | 9 Months Ended
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Sep. 30, 2018
Stockholders' Equity Note [Abstract] |
Stockholders' Equity | Stockholders’ Equity Stock Repurchase - The Board has authorized three stock repurchase programs for the Company. The Company may purchase shares on the open market from time to time, up to a total of 5.7 million shares. The Board must authorize the timing and amount of these purchases. Effective May 24, 2016, the Board authorized up to $25.0 million in open market repurchases and on June 2, 2016, the Company executed a repurchase agreement in accordance with the rules and regulations of the SEC allowing the Company to repurchase an aggregate amount of $25.0 million or a total of approximately 2.0 million shares from the open market. The agreement expired on April 15, 2017. In May 2018, the Board authorized up to $15.0 million in open market repurchases and on May 18, 2018, the Company executed a repurchase agreement in accordance with the rules and regulations of the SEC allowing the Company to repurchase shares from the open market. The agreement expires on March 1, 2019. The Company also has a stock repurchase arrangement by which employee-participants in our 401(k) savings and investment plan are entitled to have shares in AAON, Inc. stock in their accounts sold to the Company. The maximum number of shares to be repurchased is contingent upon the number of shares sold by employee-participants. Lastly, the Company repurchases shares of AAON, Inc. stock from certain of its directors and employees for payment of statutory tax withholdings on stock transactions. Al1 other repurchases from directors or employees are contingent upon Board approval. All repurchases are done at current market prices. Our repurchase activity is as follows:
| Nine months ended September 30, |  | Inception to date
| 2018 | 2017 |
Program | Shares | Total $ | $ per share | Shares | Total $ | $ per share |  | Shares | Total $ | $ per share
Open market | 116,289 |  | $ | 3,839,766 |  | $ | 33.02 |  | 8,676 |  | $ | 283,654 |  | $ | 32.69 |  |  | 3,959,784 |  | $ | 65,071,881 |  | $ | 16.43 |
401(k) | 373,129 |  | 13,660,954 |  | 36.61 |  | 364,839 |  | 12,706,655 |  | 34.83 |  |  | 6,923,152 |  | 95,729,759 |  | 13.83 |
Directors and employees | 24,457 |  | 859,696 |  | 35.15 |  | 33,845 |  | 1,193,337 |  | 35.26 |  |  | 1,943,967 |  | 18,137,729 |  | 9.33 |
Total | 513,875 |  | $ | 18,360,416 |  | $ | 35.73 |  | 407,360 |  | $ | 14,183,646 |  | $ | 34.82 |  |  | 12,826,903 |  | $ | 178,939,369 |  | $ | 13.95 |
Subsequent to September 30, 2018 and through October 30, 2018, the Company repurchased 85,200 shares for $2.8 million from the open market and 30,618 shares for $1.0 million from our 401(k) savings and investment plan. Dividends - At the discretion of the Board, we pay semi-annual cash dividends. Board approval is required to determine the date of declaration and amount for each semi-annual dividend payment. Our recent dividends are as follows:
Declaration Date | Record Date | Payment Date | Dividend per Share
May 16, 2017 | June 9, 2017 | July 7, 2017 | $ | 0.13 |
November 7, 2017 | November 30, 2017 | December 21, 2017 | $ | 0.13 |
May 18, 2018 | June 8, 2018 | July 6, 2018 | $ | 0.16 |

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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