Consolidated Statement of Shareholders' Equity (Unaudited) (Parenthetical) (USD $) In Thousands, except Per Share data	6 Months Ended
May 31, 2011
Tax benefit related to loss on currency translation	$ 0
Income tax effect on interest expense	177
Dividends per share	$ 0.18
Accumulated Other Comprehensive Loss
Tax benefit related to loss on currency translation	0
Income tax effect on interest expense	$ 177
Retained Earnings
Dividends per share	$ 0.18

Tax effect of the adjustment that results from the process of translating subsidiary financial statements and foreign equity investments into functional currency of the reporting entity.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher AICPA
-Name Accounting Research Bulletin (ARB)
-Number 51
-Paragraph 38
-Subparagraph c(3)

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 130
-Paragraph 25

Name:	us-gaap_OtherComprehensiveIncomeForeignCurrencyTranslationAdjustmentTax
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration