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Stockholders' Equity (Tables) | 6 Months Ended
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Jun. 30, 2017
Equity [Abstract] |
Cash Dividends | Cash Dividends — The Company pai d cash dividends during the six months ended June 30, 2017 and 2016 as follows:
2017: | Per Share |  |  | Total |
|  |  |  |  | (in thousands) |
Paid on March 22, 2017 | $ | 0.02 |  |  | $ | 3,326 |
Paid on June 22, 2017 |  | 0.02 |  |  |  | 4,269 |
Total cash dividends | $ | 0.04 |  |  | $ | 7,595 |
2016: | Per Share |  |  | Total |
|  |  |  |  | (in thousands) |
Paid on March 24, 2016 | $ | 0.10 |  |  | $ | 14,712 |
Paid on June 23, 2016 |  | 0.02 |  |  |  | 2,953 |
Total cash dividends | $ | 0.12 |  |  | $ | 17,665 |
Treasury Stock Acquisition | Treasury stock acquisitions during the six months ended June 30, 2017 were as follows (dollars in thousands):
| Shares |  |  | Cost |
Treasury shares at beginning of period |  | 43,392,617 |  |  | $ | 911,094 |
Purchases pursuant to stock buyback program |  | 5,503 |  |  |  | 109 |
Acquisitions pursuant to long-term incentive plan |  | 187,700 |  |  |  | 3,841 |
Treasury shares at end of period |  | 43,585,820 |  |  | $ | 915,044 |

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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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