Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2015	Nov. 30, 2014	Nov. 30, 2013
Statement of Comprehensive Income [Abstract]
Net income	$ 56,634	$ 67,379	$ 45,292
Other comprehensive income:
Amortization of interest rate swap, net of tax benefit of $424, $425 and $424, respectively	658	657	658
Comprehensive income	57,292	68,036	45,950
Amortization of interest rate swap, tax benefit	$ 424	$ 425	$ 424