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Stockholders' Equity (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Feb. 28, 2017 | Feb. 29, 2016
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning balance | $ 1,723,145 |
Net income | 14,259 | $ 13,127
Dividends on common stock | $ (2,215) |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares) | 74,854 |
Stock Issued During Period, Value, Stock Options Exercised | $ 662 |
Stock Issued During Period, Value, Share-based Compensation, Gross | 0 |
Stock-based compensation | 3,152 |
Stock repurchases | (2,543) |
Ending balance | $ 1,736,460 |
Common Stock |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Common Stock, Shares, Outstanding (in shares) | (116,224,000) |
Beginning balance | $ 116,224 |
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period (in shares) | 75,000 |
Stock Issued During Period, Value, Stock Options Exercised | $ 75 |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures (in shares) | 0 |
Stock Issued During Period, Value, Share-based Compensation, Gross | $ 0 |
Common Stock, Shares, Outstanding (in shares) | (116,299,000) |
Ending balance | $ 116,299 |
Paid-in Capital |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning balance | 696,938 |
Stock Issued During Period, Value, Stock Options Exercised | 587 |
Stock Issued During Period, Value, Share-based Compensation, Gross | (3,021) |
Stock-based compensation | 3,152 |
Ending balance | 697,656 |
Retained Earnings |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning balance | 1,563,742 |
Net income | 14,259 |
Dividends on common stock | (2,215) |
Ending balance | 1,575,786 |
Accumulated Other Comprehensive Income |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Beginning balance | (16,057) |
Ending balance | $ (16,057) |
Grantor Stock Ownership Trust |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Common Stock, Shares, Outstanding (in shares) | (9,432,000) |
Beginning balance | $ (102,300) |
Stock Issued During Period, Shares, Share-based Compensation, Net of Forfeitures (in shares) | 279,000 |
Stock Issued During Period, Value, Share-based Compensation, Gross | $ 3,021 |
Common Stock, Shares, Outstanding (in shares) | (9,153,000) |
Ending balance | $ (99,279) |
Treasury Stock |  |
Increase (Decrease) in Stockholders' Equity [Roll Forward] |  |
Common Stock, Shares, Outstanding (in shares) | (21,720,000) |
Beginning balance | $ (535,402) |
Stock repurchases | $ (2,543) |
Treasury Stock, Shares, Acquired (in shares) | (152,000) |
Common Stock, Shares, Outstanding (in shares) | (21,872,000) |
Ending balance | $ (537,945) |

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- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. + References Reference 1: 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)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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 + Details
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- Definition Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity. + References Reference 1: 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(30)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: 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 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(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 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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