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Consolidated Statements Of Stockholders' Equity (USD $) In Thousands, except Share data | Total | Common Stock [Member] | Additional Paid-In Capital [Member] | Retained Earnings [Member] | Accumulated Other Comprehensive Income (Loss) [Member]
--- | --- | --- | --- | --- | ---
Balance at Dec. 31, 2009 | $ 1,190,843 | $ 2,948 | $ (1,141) | $ 1,175,641 | $ 13,395
Balance (in shares) at Dec. 31, 2009 |  | 294,861,000 |  |  |
Dividends paid in cash | (182,814) |  |  | (182,814) |
Stock based compensation | 4,030 |  | 4,030 |  |
Net earnings | 265,356 |  |  | 265,356 |
Other comprehensive income (loss) | 5,097 |  |  |  | 5,097
Balance at Dec. 31, 2010 | 1,282,512 | 2,948 | 2,889 | 1,258,183 | 18,492
Balance (in shares) at Dec. 31, 2010 |  | 294,861,000 |  |  |
Dividends paid in cash | (191,741) |  |  | (191,741) |
Stock options exercised | 8,939 | 5 | 8,934 |  |
Stock options exercised (in shares) |  | 397,000 |  |  |
Stock based compensation | 4,050 |  | 4,050 |  |
Excess tax benefits from stock based compensation | 983 |  | 983 |  |
Net earnings | 357,929 |  |  | 357,929 |
Other comprehensive income (loss) | (3,696) |  |  |  | (3,696)
Balance at Dec. 31, 2011 | 1,458,976 | 2,953 | 16,856 | 1,424,371 | 14,796
Balance (in shares) at Dec. 31, 2011 | 295,258,674 | 295,258,000 |  |  |
Dividends paid in cash | (367,306) |  |  | (367,306) |
Stock options exercised | 29,644 | 13 | 29,631 |  |
Stock options exercised (in shares) |  | 1,306,000 |  |  |
Stock based compensation | 4,800 |  | 4,800 |  |
Excess tax benefits from stock based compensation | 10,149 |  | 10,149 |  |
Net earnings | 420,536 |  |  | 420,536 |
Other comprehensive income (loss) | 3,561 |  |  |  | 3,561
Balance at Dec. 31, 2012 | $ 1,560,360 | $ 2,966 | $ 61,436 | $ 1,477,601 | $ 18,357
Balance (in shares) at Dec. 31, 2012 | 296,564,382 | 296,564,000 |  |  |

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- Definition Equity impact of cash dividends declared by an entity during the period for all classes of stock (common, preferred, etc.). This element includes paid and unpaid dividends declared during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 01-6 -Paragraph 14 -Subparagraph l -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=6959260&loc=d3e187085-122770 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 405 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957935&loc=d3e64057-112817 + Details
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