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Stockholders' Equity (Tables) | 12 Months Ended
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Dec. 31, 2013
Cash Dividends | The Company paid cash dividends during the years ended December 31, 2011, 2012 and 2013 as follows:
|  | Per Share |  |  | Total |
|  |  |  |  | (in thousands) |
2011: |  |  |  |  |  |  |  |
Paid on March 30, 2011 |  | $ | 0.05 |  |  | $ | 7,708 |
Paid on June 30, 2011 |  |  | 0.05 |  |  |  | 7,772 |
Paid on September 30, 2011 |  |  | 0.05 |  |  |  | 7,777 |
Paid on December 30, 2011 |  |  | 0.05 |  |  |  | 7,788 |
Total cash dividends |  | $ | 0.20 |  |  | $ | 31,045 |
2012: |  |  |  |  |  |  |  |
Paid on March 30, 2012 |  | $ | 0.05 |  |  | $ | 7,788 |
Paid on June 29, 2012 |  |  | 0.05 |  |  |  | 7,650 |
Paid on September 28, 2012 |  |  | 0.05 |  |  |  | 7,518 |
Paid on December 28, 2012 |  |  | 0.05 |  |  |  | 7,346 |
Total cash dividends |  | $ | 0.20 |  |  | $ | 30,302 |
2013: |  |  |  |  |  |  |  |
Paid on March 29, 2013 |  | $ | 0.05 |  |  | $ | 7,312 |
Paid on June 28, 2013 |  |  | 0.05 |  |  |  | 7,361 |
Paid on September 30, 2013 |  |  | 0.05 |  |  |  | 7,231 |
Paid on December 31, 2013 |  |  | 0.05 |  |  |  | 7,208 |
Total cash dividends |  | $ | 0.20 |  |  | $ | 29,112 |
Treasury Stock Acquisition | Treasury stock acquisitions during the years ended December 31, 2013, 2012 and 2011 were as follows (dollars in thousands):
|  | 2013 |  |  | 2012 |  |  | 2011 |
|  | Shares |  |  | Cost |  |  | Shares |  |  | Cost |  |  | Shares |  |  | Cost |
Treasury shares at beginning of period |  |  | 38,146,738 |  |  | $ | 795,051 |  |  |  | 27,487,571 |  |  | $ | 624,759 |  |  |  | 27,343,814 |  |  | $ | 620,445 |
Purchases pursuant to stock buyback programs: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
2007 program |  |  | — |  |  |  | — |  |  |  | 4,708,784 |  |  |  | 70,092 |  |  |  | 8,689 |  |  |  | 255 |
2012 program |  |  | 2,567,266 |  |  |  | 51,107 |  |  |  | 5,863,451 |  |  |  | 98,892 |  |  |  | — |  |  |  | — |
2013 program |  |  | 602,564 |  |  |  | 12,517 |  |  |  | — |  |  |  | — |  |  |  | — |  |  |  | — |
Acquisitions Pursuant to the 2005 Long-Term Incentive Plan |  |  | 951,489 |  |  |  | 22,213 |  |  |  | 86,932 |  |  |  | 1,308 |  |  |  | 135,068 |  |  |  | 4,059 |
Treasury shares at end of period |  |  | 42,268,057 |  |  | $ | 880,888 |  |  |  | 38,146,738 |  |  | $ | 795,051 |  |  |  | 27,487,571 |  |  | $ | 624,759 |

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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 2 -URI http://asc.fasb.org/extlink&oid=6405834&loc=d3e23285-112656 Reference 2: 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 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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