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Capital Stock | 12 Months Ended
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Dec. 31, 2014
Capital Stock [Abstract] |
Capital Stock | 11. Capital Stock The Company's authorized capital stock consists of 25 million shares of preferred stock, par value $.001 per share, 500 million shares of Class A common stock, par value $.001 per share, and 100 million shares of Class B common stock, par value $.001 per share. The shares of Class A common stock and Class B common stock are identical in all respects, except for voting rights and certain conversion rights and transfer restrictions, as follows: (1) each share of Class A common stock entitles the holder to one vote on matters submitted to a vote of the Company's stockholders and each share of Class B common stock entitles the holder to ten votes on each such matter; (2) stock dividends of Class A common stock may be paid only to holders of Class A common stock and stock dividends of Class B common stock may be paid only to holders of Class B common stock; (3) if a holder of Class B common stock transfers such shares to a person other than a permitted transferee, as defined in the Company's Certificate of Incorporation, such shares will be converted automatically into shares of Class A common stock; and (4) Class A common stock has no conversion rights; however, each share of Class B common stock is convertible into one share of Class A common stock, in whole or in part, at any time at the option of the holder. All outstanding Class B shares have been converted to Class A shares. As of December 31, 2013 and 2014, there were no preferred or Class B common shares outstanding. Weighted-average common shares outstanding The following is a reconciliation of the weighted-average common shares outstanding for purposes of computing basic and diluted net income per share (in thousands):
|  | Year Ended December 31, |
|  | 2012 |  |  | 2013 |  |  | 2014 |
Basic weighted-average common shares outstanding |  |  | 60,600 |  |  |  | 58,606 |  |  |  | 59,073 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |
Stock awards and options |  |  | 2,425 |  |  |  | 2,842 |  |  |  | 1,814 |
Diluted weighted-average common shares outstanding |  |  | 63,025 |  |  |  | 61,448 |  |  |  | 60,887 |
For the years ended December 31, 2012, 2013 and 2014, other stock options totaling 0.1 million, 1.2 million and 2.7 million, respectively, were excluded from the calculation of diluted earnings per share because they were anti-dilutive. Repurchases of common stock The board of directors has approved a stock repurchase program authorizing the Company to repurchase the Company's outstanding shares of Class A common stock on the open market or in private transactions. The repurchases are used primarily to offset dilution from the Company's equity incentive plans and for strategic initiatives. During the years ended December 31, 2012, 2013 and 2014, the Company repurchased 4.6 million, 1.7 million and 0.8 million shares of Class A common stock for an aggregate price of $201.5 million, $140.9 million and $45.7 million, respectively. In May 2012 and July 2013, the Company's board of directors authorized an increase of $250.0 million and $400.0 million, respectively, in the amount available under the Company's ongoing stock repurchase program. At December 31, 2014, $348.8 million was available for repurchases under the stock repurchase program.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d),(e)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 4 -Subparagraph (SAB TOPIC 4.C) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187143-122770 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29-31) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 4.E) -URI http://asc.fasb.org/extlink&oid=27010918&loc=d3e74512-122707 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section C Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 4 -Section E Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Article 4 Reference 8: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21506-112644 Reference 9: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Preferred Stock -URI http://asc.fasb.org/extlink&oid=6521494 Reference 10: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 29, 30, 31 -Article 5 Reference 11: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 12: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644 Reference 13: 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=27012166&loc=d3e187085-122770 Reference 14: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 15: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21564-112644 Reference 16: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21488-112644 Reference 17: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 18: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph d -Article 4 Reference 19: 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 + Details
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