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Retirement Plans and Employee Stock Purchase Plans (Tables) | 12 Months Ended
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Dec. 31, 2014
Retirement Plans and Employee Stock Purchase Plans |
Schedule of purchases made under the 2009 Employee Stock Purchase Plans |
|  | Year Ended December 31, |
|  | 2014 |  | 2013 |  | 2012 |
Number of shares purchased |  |  | 295,035 |  |  | 299,786 |  |  | 487,451 |
Average price of shares purchased |  | $ | 12.72 |  | $ | 12.33 |  | $ | 8.35 |

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- Definition Tabular disclosure of employee stock purchase plan activity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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