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Capital Stock (Tables) | 3 Months Ended
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Mar. 31, 2014
Capital Stock | We have authorized capital stock of 485.0 million shares which includes 475.0 million shares of common stock and 10.0 million shares of preferred stock. We currently have no preferred stock issued or outstanding. The following is a schedule of changes in the number of common shares outstanding since the beginning of 2013:
|  | Three Months Ended March 31, 2014 |  |  | Year Ended December 31, 2013 |
Beginning balance |  |  | 163,342,894 |  |  |  | 162,514,098 |
SARs exercised |  |  | 48,280 |  |  |  | 278,916 |
Restricted stock granted |  |  | 74,553 |  |  |  | 401,122 |
Restricted stock units vested |  |  | 198,943 |  |  |  | 119,480 |
Treasury shares issued |  |  | 5,245 |  |  |  | 29,278 |
Ending balance |  |  | 163,669,915 |  |  |  | 163,342,894 |

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- Definition Tabular disclosure of an entity's capital units or capital shares, including the value of capital units or capital shares, units authorized, units outstanding and other information necessary to a fair presentation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.6-04.16) -URI http://asc.fasb.org/extlink&oid=6488278&loc=d3e603758-122996 + Details
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