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Stockholders' Equity (Narratives) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | ---
Aug. 31, 2015 | Aug. 31, 2014 | Aug. 31, 2015 | Aug. 31, 2014 | Nov. 30, 2014 | Jul. 17, 2014
Equity [Abstract] |  |  |  |  |  |
Dividend paid in each quarter (in dollars per share) | $ 0.0250 | $ 0.0250 | $ 0.075 | $ 0.075 |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Number of common stock, authorized, approved under a board approved stock repurchase program | 4,000,000 |  | 4,000,000 |  |  |
Common stock reserve, shares | 12,602,735 |  | 12,602,735 |  |  |
Treasury Stock, Value | $ 446,776 |  | $ 446,776 |  | $ 446,476 |
Director Stock Units [Domain] |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |
Number of common stock, authorized, approved under a board approved stock repurchase program |  |  |  |  |  | 680,000

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- Definition Aggregate dividends paid during the period for each share of common stock outstanding. + References Reference 1: 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 amount allocated to treasury stock. Treasury stock is common and preferred shares of an entity that were issued, repurchased by the entity, and are held in its treasury. + 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 + Details
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