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Stockholders' Equity | 12 Months Ended
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Dec. 31, 2018
Equity [Abstract] |
Stockholders' Equity | Note 16. Stockholders’ Equity
|  | Common Stock |  |  | Treasury Stock |
(number of shares in thousands) |  | 2018 |  |  | 2017 |  |  | 2016 |  |  | 2018 |  |  | 2017 |  |  | 2016 |
At January 1 |  |  | 29,555 |  |  |  | 29,555 |  |  |  | 29,555 |  |  |  | 5,204 |  |  |  | 5,483 |  |  |  | 5,453 |
Exercise of options |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | (103 | ) |  |  | (296 | ) |  |  | (152 | )
Stock purchases |  |  | 0 |  |  |  | 0 |  |  |  | 0 |  |  |  | 20 |  |  |  | 17 |  |  |  | 182 |
At December 31 |  |  | 29,555 |  |  |  | 29,555 |  |  |  | 29,555 |  |  |  | 5,121 |  |  |  | 5,204 |  |  |  | 5,483 |
At December 31, 2018, the Company had authorized common stock of 40,000,000 shares (2017 - 40,000,000).

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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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