Consolidated Statements of Comprehensive Income Statement (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Feb. 28, 2013	Feb. 29, 2012
Net income	$ 13,513	$ 17,139
Other comprehensive income:
Foreign currency translation, net of tax benefit of $13	0	20
Amortization of terminated interest rate swap, net of tax benefit of $107 and $106, respectively	164	163
Comprehensive income	13,677	17,322
Foreign currency translation, net of tax benefit	0	13
Amortization of interest rate swap, net of tax benefit	$ 106	$ 107