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Stockholders' Equity (Narratives) (Details) (USD $) In Thousands, except Share data, unless otherwise specified | 0 Months Ended | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 08, 2014 | Mar. 25, 2014 | Jan. 29, 2013 | Aug. 31, 2014 | May 31, 2014 | Feb. 28, 2014 | Aug. 31, 2013 | May 31, 2013 | Feb. 28, 2013 | Aug. 31, 2014 | Aug. 31, 2013 | Nov. 30, 2013 | Jul. 17, 2014 Director Stock Units [Domain] | Jul. 18, 2013 Director Stock Units [Domain]
Equity [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Stock Issued During Period, Shares, New Issues | 1,041,666 | 6,944,445 | 6,325,000 |  |  |  |  |  |  |  |  |  |  |
Common Stock, Par or Stated Value Per Share |  | $ 1.00 | $ 1.00 |  |  |  |  |  |  |  |  |  |  |
Treasury Stock Acquired, Average Cost Per Share |  | $ 18.00 | $ 18.25 |  |  |  |  |  |  |  |  |  |  |
Stock issued during period, shares, treasury stock reissued |  | 7,986,111 | 6,325,000 |  |  |  |  |  |  |  |  |  |  |
Proceeds from issuance of common stock, net |  |  | $ 109,503 |  |  |  |  |  |  | $ 137,045 | $ 109,503 |  |  |
Dividend paid in each quarter (in dollars per share) |  |  |  | $ 0.0250 | $ 0.0250 | $ 0.0250 | $ 0.0250 | $ 0.025 | $ 0.025 | $ 0.0750 | $ 0.0750 |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of common stock, authorized, approved under a board approved stock repurchase program |  |  |  | 4,000,000 |  |  |  |  |  | 4,000,000 |  |  | 680,000 |
Common Stock, Shares, Issued |  |  |  |  |  |  |  |  |  |  |  |  |  | 478,294
Common Stock, Shares Authorized |  |  |  |  |  |  |  |  |  |  |  |  | 680,000 |
Common stock reserve, shares |  |  |  | 12,602,735 |  |  |  |  |  | 12,602,735 |  |  | 679,815 |
Treasury Stock, Value |  |  |  | $ 445,976 |  |  |  |  |  | $ 445,976 |  | $ 718,565 |  | $ 7,900

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- Definition Aggregate number of common shares reserved for future issuance. + 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 + Details
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Article 3 Reference 2: 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 + Details
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- Definition The cash inflow from the issuance of common stock, preferred stock, treasury stock, stock options, and other types of equity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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