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Share Capital | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Share Capital | Share capital The Company's authorized share capital consists of (a) 50,000,000 shares of Preferred Stock, par value $0.001 per share; (b) 50,000,000 shares of Class A Stock, par value $0.001 per share; and (c) 99,665 shares of Class B voting common stock ("Class B Stock"), par value $0.001 per share. No Preferred Stock has been issued. 99,665 shares of Class B Stock have been issued and are outstanding. The Class A Stock and the Class B Stock are equal in all respects except that the Class A Stock is non-voting. The following table reflects changes in the number of shares of Class A Stock outstanding for the periods indicated:
| 2017 |  | 2016
Class A Stock outstanding, beginning of year | 13,261,095 |  |  | 13,238,486 |
Issued pursuant to shared-based compensation plans (note 14) | 328,458 |  |  | 283,471 |
Repurchased and canceled pursuant to the stock buy-back | (450,350 | ) |  | (260,862 | )
Class A Stock outstanding, end of year | 13,139,203 |  |  | 13,261,095 |
Stock buy-back On May 5, 2017, the Company announced that its board of directors approved a share repurchase program that authorizes the Company to purchase up to 650,000 shares of the Company's Class A Stock, representing approximately 5% of its 13,178,571 then issued and outstanding shares of Class A Stock. This authorization supplemented the 40,734 shares that remained authorized and available under the Company's previous share repurchase program covering up to 665,000 shares of the Company's Class A Stock, which was announced on September 15, 2015, for a total of 690,734 shares authorized and available for repurchase. During the year ended December 31, 2017, the Company purchased and canceled an aggregate of 450,350 shares of Class A Stock for a total consideration of $7.5 million ($16.57 per share). As of December 31, 2017, 508,906 shares were available to be purchased under this program. Any such share purchases will be made by the Company from time to time in the open market at the prevailing open market price using cash on hand, in compliance with the applicable rules and regulations of the New York Stock Exchange and federal and state securities laws and the terms of the Company's senior secured debt. All shares purchased will be canceled. The share repurchase program is expected to continue indefinitely. The timing and amounts of any purchases will be based on market conditions and other factors including price, regulatory requirements and capital availability. The share repurchase program does not obligate the Company to repurchase any dollar amount or number of shares of Class A Stock. Depending on market conditions and other factors, these repurchases may be commenced or suspended from time to time without prior notice. Dividends The Company paid cash dividends of $0.44 per share to holders of Class A and Class B Stock in 2017, 2016 and 2015.

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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