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Treasury and Preferred Stock (Tables) | 12 Months Ended
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Dec. 31, 2015
Equity [Abstract] |
Treasury stock activity | Treasury stock activity for the years ended December 31, 2015, 2014 and 2013, was as follows:
(Shares in thousands) | 2015 |  | 2014 |  | 2013
Balance at January 1 | 9,844 |  |  | 10,129 |  |  | 12,907 |
Compensation plans and other | (458 | ) |  | (697 | ) |  | (2,778 | )
Share repurchases | 2,339 |  |  | 412 |  |  | — |
Balance at December 31 | 11,725 |  |  | 9,844 |  |  | 10,129 |

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- Definition Tabular disclosure of treasury stock, including, but not limited to, average cost per share, description of share repurchase program, shares repurchased, shares held for each class of treasury stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23315-112656 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23309-112656 + Details
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