Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Nov. 30, 2013	Nov. 30, 2012	Nov. 30, 2011
Statement of Other Comprehensive Income [Abstract]
Net income	$ 45,292	$ 54,578	$ 69,424
Other comprehensive income:
Foreign currency translation, net of tax benefit (expense) of $12, ($8) and $0, respectively	0	(13)	19
Amortization of interest rate swap, net of tax benefit of $397, $424 and $424, respectively	658	658	594
Comprehensive income	45,950	55,223	70,037
Foreign currency translation, net of tax benefit (expense)	0	(8)	12
Amortization of interest rate swap, net of tax benefit	$ 424	$ 424	$ 397